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Surveyors establish land, airspace, and water boundaries. They measure the Earth's surface to collect data that are used to draw maps, determine the shape and contour of parcels of land, and set property lines and boundaries. They also define airspace for airports and measure construction and mining sites. Surveyors work with civil engineers, landscape architects, and urban and regional planners to develop comprehensive design documents.

Surveyors typically do the following:

• Measure distances, directions, and angles between points on, above, and below the Earth's surface
• Select known reference points and then determine the exact location of important features in the survey area using special equipment
• Establish official land and water boundaries
• Research land records and other sources of information affecting properties
• Look for evidence of previous boundaries to determine where boundary lines are
• Travel to locations to measure distances and directions between points
• Record the results of surveying and verify the accuracy of data
• Prepare plots, maps, and reports
• Work with cartographers (mapmakers), architects, construction managers, and others
• Present findings to clients, government agencies, and others
• Write descriptions of land for deeds, leases, and other legal documents
• Provide expert testimony in court regarding their work or that of other surveyors

Surveyors guide construction and development projects and provide information needed for the buying and selling of property. In construction, surveyors determine the precise location of roads or buildings and proper depths for foundations and roads. Whenever property is bought or sold, it needs to be surveyed for legal purposes.

In their work, surveyors use the Global Positioning System (GPS), a system of satellites that locates reference points with a high degree of precision. Surveyors interpret and verify the GPS results. They gather the data that is fed into a Geographic Information System (GIS), which is then used to create detailed maps.

Surveyors take measurements in the field with a crew, a group that typically consists of a licensed surveyor and trained survey technicians. The person in charge of the crew (called the party chief) may be either a surveyor or a senior surveying technician. The party chief leads day-to-day work activities. For more information, see the profile on surveying and mapping technicians.

Some surveyors work in specialty fields to survey particular characteristics of the Earth. Examples include the following:

Geodetic surveyors use high-accuracy techniques, including satellite observations, to measure large areas of the Earth's surface.

Geophysical prospecting surveyors mark sites for subsurface exploration, usually to look for petroleum.

Marine or hydrographic surveyors survey harbors, rivers, and other bodies of water to determine shorelines, the topography of the bottom, water depth, and other features.

Landscape architects plan and design land areas for parks, recreational facilities, highways, airports, and other properties. Projects may include subdivisions and commercial, industrial, and residential sites.

Landscape architects typically do the following:

• Confer with clients, engineers, and building architects to understand a project
• Prepare site plans, specifications, and cost estimates
• Coordinate the arrangement of existing and proposed land features and structures
• Prepare graphic representations and drawings of proposed plans and designs
• Analyze environmental reports and data on land conditions, such as drainage
• Inspect landscape work to ensure that it adheres to original plans
• Approve the quality of work that others do
• Seek new work through marketing or by giving presentations

People enjoy attractively designed gardens, public parks, playgrounds, residential areas, college campuses, and golf courses. Landscape architects design these areas so that they are not only functional but also beautiful and harmonious with the natural environment.

Landscape architects plan the locations of buildings, roads, and walkways. They also plan where to plant flowers, shrubs, and trees. Landscape architects design and plan the restoration of natural places disturbed by humans, such as wetlands, stream corridors, and mined areas.

Many landscape architects specialize in a particular area, such as beautifying or otherwise improving streets and highways, waterfronts, parks and playgrounds, or shopping centers.

Increasingly, landscape architects are working in environmental remediation, such as preserving and restoring wetlands or managing storm-water runoff in new developments. They are also increasingly playing a role in preserving and restoring historic landscapes.

Landscape architects who work for government agencies do design sites and landscapes for government buildings, parks, and other public lands, as well as plan for landscapes and recreation areas in national parks and forests.

In addition, they prepare environmental impact statements and studies on environmental issues, such as planning for use of public lands.

Heavy vehicle and mobile equipment service technicians inspect, maintain, and repair vehicles and machinery used in construction, farming, rail transportation, and other industries.

Heavy vehicle and mobile equipment service technicians typically do the following:

• Read and understand operating manuals, blueprints, and drawings
• Perform scheduled maintenance, such as cleaning and lubricating parts
• Diagnose and identify malfunctions, using computerized tools and equipment
• Inspect, repair, and replace defective or worn parts, such as bearings, pistons, and gears
• Overhaul and test major components, such as engines, hydraulics, and electrical systems
• Disassemble and reassemble heavy equipment and components
• Travel to worksites to repair large equipment, such as cranes

Heavy vehicles and mobile equipment are critical to many industrial activities, including construction and railroad transportation. Various types of equipment, such as farm machinery, cranes, and bulldozers, are used to move materials, till land, lift beams, and dig earth to pave the way for development and construction.

Heavy vehicle and mobile equipment service technicians repair and maintain engines, hydraulic systems, transmissions, and electrical systems of agricultural, industrial, construction, and rail equipment. They ensure the performance and safety of fuel lines, brakes, transmissions, and other systems.

With many types of equipment and mechanical and electrical systems, service technicians use diagnostic computers to identify problems and make adjustments or repairs. Although the use of computerized testing equipment, such as tachometers and dynamometers, is common, technicians also use many different power and machine tools, including pneumatic wrenches, lathes, and welding equipment.

Service technicians also use many different handtools, such as screwdrivers, pliers, and wrenches, to work on small parts and in hard-to-reach areas. They generally purchase these tools over the course of their careers, often investing thousands of dollars in their collections.

After locating malfunctions, service technicians repair, replace, and recalibrate components such as hydraulic pumps or spark plugs. This may involve disassembling and reassembling major equipment or making adjustments through an onboard computer program.

The following are types of heavy vehicle and mobile equipment service technicians:

Farm equipment mechanics service and repair farm equipment, such as tractors and harvesters. They also work on smaller consumer-grade lawn and garden tractors. Most mechanics work for dealer repair shops, where farmers increasingly send their equipment for maintenance.   

Mobile heavy equipment mechanics repair and maintain construction and surface mining equipment, such as bulldozers, cranes, graders, and excavators. Many work for equipment wholesale and distribution shops and large construction and mining companies. Those working for the federal government may work on tanks and other military equipment.

Rail car repairers specialize in servicing railroad locomotives, subway cars, and other rolling stock. They usually work for railroad, public and private transit companies, and rail car manufacturers.

For information about technicians and mechanics who work primarily on automobiles, see the profile on automotive service technicians and mechanics.

For information about technicians who work primarily on large trucks and buses, see the profile on diesel service technicians and mechanics.

For information about technicians and mechanics who primarily work on motorboats, motorcycles and small all-terrain vehicles, see the profile on small engine mechanics.

Logging workers harvest thousands of acres of forests each year. The timber they harvest provides the raw material for countless consumer and industrial products.

Logging workers typically do the following:

• Cut down trees with hand-held power chain saws or mobile felling machines
• Fasten chains around logs to be dragged by tractors
• Drag logs to the landing or deck area
• Separate logs by species and type of wood and load them onto trucks
• Drive and maneuver tractors and tree harvesters to shear trees and cut logs into desired lengths
• Drive tractors to build or repair logging roads
• Grade logs according to characteristics such as knot size and straightness
• Inspect equipment for safety before using it and do necessary basic maintenance tasks
• Calculate total board feet, cordage, or other wood measurement units, using conversion tables

Timber-cutting and logging are done by a logging crew. The following are some types of logging workers:

Fallers cut down trees with hand-held power chain saws or mobile felling machines.

Buckers trim the tops and branches of felled trees and buck (cut) the logs into specific lengths.

Choke setters fasten chokers (steel cables or chains) around logs to be skidded (dragged) by tractors or forwarded by the cable-yarding system to the landing or deck area, where the logs are separated by species and type of product, such as pulpwood, saw logs, or veneer logs, and loaded onto trucks.

Rigging slingers and chasers set up and dismantle the cables and guy wires of the yarding system.

Log sorters, markers, movers, and chippers sort, mark, and move logs, based on species, size, and ownership, and tend machines that chip up logs.

Logging equipment operators use tree harvesters to fell trees, shear tree limbs off, and cut trees into desired lengths. They drive tractors and operate self-propelled machines called skidders or forwarders, which drag or transport logs to a loading area.

Log graders and scalers inspect logs for defects and measure the logs to determine their volume. They estimate the value of logs or pulpwood. These workers often use hand-held data collection devices to enter data about trees. The data are later downloaded to a computer.

A typical crew might consist of

• one or two tree fallers or one logging equipment operator with a tree harvester to cut down trees
• one bucker to cut logs
• two logging equipment operators with tractors to drag cut trees to the loading deck
• one logging equipment operator to load the logs onto trucks.

Forest and conservation workers measure and improve the quality of forests. Under the supervision of foresters and forest and conservation technicians, they help to develop, maintain, and protect forests.

Forest and conservation workers typically do the following:

• Plant seedlings to reforest land
• Clear away brush and debris from camping trails, roadsides, and camping areas
• Count trees during tree-measuring efforts
• Select or cut trees according to markings, sizes, types, or grades
• Spray trees with insecticides and fungicides to kill insects and protect the trees from disease
• Identify and remove diseased or undesirable trees
• Inject vegetation with insecticides and herbicides
• Help prevent and suppress forest fires
• Check equipment to ensure that it is operating properly

Forest and conservation workers are often supervised by foresters and forest and conservation technicians, who direct their work and evaluate their progress.

They do basic tasks to maintain and improve forest quality, such as planting seedlings or removing diseased trees. To plant seedlings, they use digging and planting tools. To cut trees, they use handsaws or power saws.

Some forest workers work on tree farms, where they plant, cultivate, and harvest many different kinds of trees. Their duties vary with the type of farm and may include planting seedlings, spraying to control weed growth and insects, and harvesting trees.

Some forest and conservation workers work in forest nurseries, where they sort through tree seedlings, discarding those that don't meet standards. Others use hand tools or their hands to gather woodland products, such as decorative greens, tree cones, bark, moss, and other wild plant life. Some may tap trees to make syrup or chemicals.

Forest and conservation workers who are employed by or under contract with state and local governments may clear brush and debris from trails, roadsides, and camping areas. They may clean kitchens and rest rooms at recreational facilities and campgrounds.

Workers with a fire protection background also help to prevent fires. For example, they may construct firebreaks, which are gaps in vegetation that can help slow down or stop the progress of a fire. They also may work with technicians to study how quickly fires spread and how successful fire suppression activities were. For example, workers help count how many trees will be affected by a fire. They also sometimes respond to forest emergencies.

Logging workers harvest thousands of acres of forests each year. The timber they harvest provides the raw material for countless consumer and industrial products.

Logging workers typically do the following:

• Cut down trees with hand-held power chain saws or mobile felling machines
• Fasten chains around logs to be dragged by tractors
• Drag logs to the landing or deck area
• Separate logs by species and type of wood and load them onto trucks
• Drive and maneuver tractors and tree harvesters to shear trees and cut logs into desired lengths
• Drive tractors to build or repair logging roads
• Grade logs according to characteristics such as knot size and straightness
• Inspect equipment for safety before using it and do necessary basic maintenance tasks
• Calculate total board feet, cordage, or other wood measurement units, using conversion tables

Timber-cutting and logging are done by a logging crew. The following are some types of logging workers:

Fallers cut down trees with hand-held power chain saws or mobile felling machines.

Buckers trim the tops and branches of felled trees and buck (cut) the logs into specific lengths.

Choke setters fasten chokers (steel cables or chains) around logs to be skidded (dragged) by tractors or forwarded by the cable-yarding system to the landing or deck area, where the logs are separated by species and type of product, such as pulpwood, saw logs, or veneer logs, and loaded onto trucks.

Rigging slingers and chasers set up and dismantle the cables and guy wires of the yarding system.

Log sorters, markers, movers, and chippers sort, mark, and move logs, based on species, size, and ownership, and tend machines that chip up logs.

Logging equipment operators use tree harvesters to fell trees, shear tree limbs off, and cut trees into desired lengths. They drive tractors and operate self-propelled machines called skidders or forwarders, which drag or transport logs to a loading area.

Log graders and scalers inspect logs for defects and measure the logs to determine their volume. They estimate the value of logs or pulpwood. These workers often use hand-held data collection devices to enter data about trees. The data are later downloaded to a computer.

A typical crew might consist of

• one or two tree fallers or one logging equipment operator with a tree harvester to cut down trees
• one bucker to cut logs
• two logging equipment operators with tractors to drag cut trees to the loading deck
• one logging equipment operator to load the logs onto trucks.

Grounds maintenance workers provide a pleasant outdoor environment by ensuring that the grounds of houses, businesses, and parks are attractive, orderly, and healthy.

Grounds maintenance workers typically do the following:

• Mow, edge, and fertilize lawns
• Weed and mulch landscapes
• Trim hedges, shrubs, and small trees
• Remove dead, damaged, or unwanted trees
• Plant flowers, trees, and shrubs
• Water lawns, landscapes, and gardens

Grounds maintenance workers do a variety of tasks to achieve a pleasant and functional outdoor environment. They also care for indoor gardens and plantings in commercial and public facilities, such as malls, hotels, and botanical gardens.

The following are types of grounds maintenance workers:

Landscaping workers create new outdoor spaces or upgrade existing ones by planting trees, flowers, and shrubs. They also trim, fertilize, mulch, and water plants. Some grade and install lawns or construct hardscapes such as walkways, patios, and decks. Others help install lighting or sprinkler systems. Landscaping workers work in a variety of residential and commercial settings, such as homes, apartment buildings, office buildings, shopping malls, and hotels and motels.

Groundskeeping workers, also called groundskeepers, maintain existing grounds. They care for plants and trees, rake and mulch leaves, and clear snow from walkways. They work on athletic fields, golf courses, cemeteries, university campuses, and parks, as well as in many of the same settings as landscaping workers. They also see to the proper upkeep and repair of sidewalks, parking lots, groundskeeping equipment, fountains, fences, planters, and benches.

Groundskeeping workers who care for athletic fields keep natural and artificial turf in top condition, mark out boundaries, and paint turf with team logos and names before events. They mow, water, fertilize, and aerate the fields regularly. They must make sure that the underlying soil on fields with natural turf has the required composition to allow proper drainage and to support the grasses used on the field. In sports venues, they vacuum and disinfect synthetic turf after its use to prevent the growth of harmful bacteria, and they remove the turf and replace the cushioning pad periodically.

Groundskeepers in parks and recreation facilities care for lawns, trees, and shrubs; maintain playgrounds; clean buildings; and keep parking lots, picnic areas, and other public spaces free of litter. They also may erect and dismantle snow fences, and maintain swimming pools. These workers inspect buildings and equipment, make needed repairs, and keep everything freshly painted.

Some groundskeepers specialize in caring for cemeteries and memorial gardens. They dig graves to specified depths, generally using a backhoe. They mow grass regularly, apply fertilizers and other chemicals, prune shrubs and trees, plant flowers, and remove debris from graves.

Greenskeepers maintain golf courses. Their work is similar to that of groundskeepers, but they also periodically relocate holes on putting greens and maintain benches and tee markers along the course. In addition, greenskeepers keep canopies, benches, and tee markers repaired and freshly painted.

Pesticide handlers, sprayers, and applicators apply herbicides, fungicides, or insecticides on plants or the soil to prevent or control weeds, insects, and diseases. Those who work for chemical lawn or tree service firms are more specialized, inspecting lawns for problems and applying fertilizers, pesticides, and other chemicals to stimulate growth and prevent or control weeds, diseases, or insect infestations.

Tree trimmers and pruners, also called arborists, cut away dead or excess branches from trees or shrubs to clear utility lines, roads, and sidewalks. Although many workers strive to improve the appearance and health of trees and plants, some specialize in diagnosing and treating tree diseases. Others specialize in pruning, trimming, and shaping ornamental trees and shrubs. Tree trimmers and pruners use chainsaws, chippers, and stump grinders while on the job. When trimming near power lines, they usually work on truck-mounted lifts and use power pruners.

Construction equipment operators drive, maneuver, or control the heavy machinery used to construct roads, bridges, buildings, and other structures.

Construction equipment operators typically do the following:

• Check to make sure that equipment functions properly
• Clean, maintain, and make basic repairs to equipment
• Report malfunctions to supervisors
• Move levers, push pedals, or turn valves to activate power equipment
• Drive and maneuver equipment
• Coordinate machine actions with crew members in response to hand or audio signals
• Ensure that safety standards are met

Construction equipment operators use machinery to move construction materials, earth, and other heavy materials at construction sites and mines. They operate equipment that clears and grades land to prepare it for construction of roads, bridges, and buildings, as well as airport runways, power generation facilities, dams, levees, and other structures.

The following are types of construction equipment operators:

Operating engineers and other construction equipment operators work with one or several types of power construction equipment. They may operate excavation and loading machines equipped with scoops, shovels, or buckets that dig sand, gravel, earth, or similar materials. In addition to operating the familiar bulldozer, they operate trench excavators, road graders, and similar equipment. Sometimes, they may drive and control industrial trucks or tractors equipped with forklifts or booms for lifting materials. They also may operate and maintain air compressors, pumps, and other power equipment at construction sites.

Paving and surfacing equipment operators control the machines that spread and level asphalt or spread and smooth concrete for roadways or other structures. Paving and surfacing equipment operators may specialize further:

• Asphalt spreader operators turn valves to regulate the temperature of asphalt and the flow of asphalt onto the roadbed. They must ensure that the machine distributes the paving material evenly, and they also must ensure that there is a constant flow of asphalt into the hopper.
• Concrete paving machine operators control levers and turn handwheels to move attachments that spread, vibrate, and level wet concrete. They must watch the surface of the concrete carefully to identify low spots into which workers must add concrete.
• Tamping equipment operators use machines that compact earth and other fill materials for roadbeds or other construction sites. They also may operate machines with interchangeable hammers to cut or break up old pavement and drive guardrail posts into the ground.

Piledriver operators use large machines mounted on skids, barges, or cranes to hammer piles into the ground. Piles are long, heavy beams of wood or steel driven into the ground to support retaining walls, bridges, piers, or building foundations. Some piledriver operators work on offshore oil rigs.

Some workers operate cranes to move construction materials. For more information on these workers, see the profile on material moving machine operators.

Grounds maintenance workers provide a pleasant outdoor environment by ensuring that the grounds of houses, businesses, and parks are attractive, orderly, and healthy.

Grounds maintenance workers typically do the following:

• Mow, edge, and fertilize lawns
• Weed and mulch landscapes
• Trim hedges, shrubs, and small trees
• Remove dead, damaged, or unwanted trees
• Plant flowers, trees, and shrubs
• Water lawns, landscapes, and gardens

Grounds maintenance workers do a variety of tasks to achieve a pleasant and functional outdoor environment. They also care for indoor gardens and plantings in commercial and public facilities, such as malls, hotels, and botanical gardens.

The following are types of grounds maintenance workers:

Landscaping workers create new outdoor spaces or upgrade existing ones by planting trees, flowers, and shrubs. They also trim, fertilize, mulch, and water plants. Some grade and install lawns or construct hardscapes such as walkways, patios, and decks. Others help install lighting or sprinkler systems. Landscaping workers work in a variety of residential and commercial settings, such as homes, apartment buildings, office buildings, shopping malls, and hotels and motels.

Groundskeeping workers, also called groundskeepers, maintain existing grounds. They care for plants and trees, rake and mulch leaves, and clear snow from walkways. They work on athletic fields, golf courses, cemeteries, university campuses, and parks, as well as in many of the same settings as landscaping workers. They also see to the proper upkeep and repair of sidewalks, parking lots, groundskeeping equipment, fountains, fences, planters, and benches.

Groundskeeping workers who care for athletic fields keep natural and artificial turf in top condition, mark out boundaries, and paint turf with team logos and names before events. They mow, water, fertilize, and aerate the fields regularly. They must make sure that the underlying soil on fields with natural turf has the required composition to allow proper drainage and to support the grasses used on the field. In sports venues, they vacuum and disinfect synthetic turf after its use to prevent the growth of harmful bacteria, and they remove the turf and replace the cushioning pad periodically.

Groundskeepers in parks and recreation facilities care for lawns, trees, and shrubs; maintain playgrounds; clean buildings; and keep parking lots, picnic areas, and other public spaces free of litter. They also may erect and dismantle snow fences, and maintain swimming pools. These workers inspect buildings and equipment, make needed repairs, and keep everything freshly painted.

Some groundskeepers specialize in caring for cemeteries and memorial gardens. They dig graves to specified depths, generally using a backhoe. They mow grass regularly, apply fertilizers and other chemicals, prune shrubs and trees, plant flowers, and remove debris from graves.

Greenskeepers maintain golf courses. Their work is similar to that of groundskeepers, but they also periodically relocate holes on putting greens and maintain benches and tee markers along the course. In addition, greenskeepers keep canopies, benches, and tee markers repaired and freshly painted.

Pesticide handlers, sprayers, and applicators apply herbicides, fungicides, or insecticides on plants or the soil to prevent or control weeds, insects, and diseases. Those who work for chemical lawn or tree service firms are more specialized, inspecting lawns for problems and applying fertilizers, pesticides, and other chemicals to stimulate growth and prevent or control weeds, diseases, or insect infestations.

Tree trimmers and pruners, also called arborists, cut away dead or excess branches from trees or shrubs to clear utility lines, roads, and sidewalks. Although many workers strive to improve the appearance and health of trees and plants, some specialize in diagnosing and treating tree diseases. Others specialize in pruning, trimming, and shaping ornamental trees and shrubs. Tree trimmers and pruners use chainsaws, chippers, and stump grinders while on the job. When trimming near power lines, they usually work on truck-mounted lifts and use power pruners.

Conservation scientists and foresters manage overall land quality of forests, parks, rangelands, and other natural resources.

Conservation scientists and foresters typically do the following:

• Monitor forestry and conservation activities to assure compliance with government regulations
• Establish plans for managing forest lands and resources
• Supervise activities of other forestry and conservation workers
• Choose and prepare sites for new trees using controlled burning, bulldozers, or herbicides to clear land
• Negotiate terms and conditions for forest harvesting and land-use contracts
• Direct and participate in forest-fire suppression
• Determine ways to remove timber with minimum environmental damage
• Monitor forest-cleared lands to ensure that they are suitable for future use

Conservation scientists manage, improve, and protect the country's natural resources. They work with landowners and federal, state, and local governments to devise ways to use and improve the land while safeguarding the environment. Conservation scientists advise farmers, farm managers, and ranchers on how they can improve their land for agricultural purposes and control erosion.

Foresters have a wide range of duties, and their responsibilities vary depending on their employer. Some primary duties of foresters include drawing up plans to regenerate forested lands, monitoring the progress of those lands, and supervising tree harvests. They also come up with plans to keep forests free from disease, harmful insects, and damaging wildfires.

Foresters may choose and direct the preparation of sites on which trees will be planted. They advise on the type, number, and placement of trees to be planted. When the trees reach a certain size, foresters decide which trees should be harvested and sold to sawmills.

Many conservation scientists and foresters supervise forest and conservation workers and technicians, directing their work and evaluating their progress. For more information, see the profiles on forest and conservation workers and forest and conservation technicians. 

Conservation scientists and foresters evaluate data on forest and soil quality, assessing damage to trees and forest lands caused by fires and logging activities. In addition, they lead activities such as fire suppression and planting seedlings. Fire suppression activities include measuring how quickly fires will spread and how successful the planned suppression activity turns out. 

Scientists and foresters use their skills to determine a fire's impact on a region's environment. Communication with firefighters and other forest workers is an important component of fire suppression activities because the information that conservation scientists and foresters give can change how firefighters work.

Conservation scientists and foresters use a number of tools to perform their jobs. They use clinometers to measure the heights of trees, diameter tapes to measure a tree's circumference, and increment borers and bark gauges to measure the growth of trees so that timber volumes can be computed and growth rates estimated.

In addition, conservation scientists and foresters often use remote sensing (aerial photographs and other imagery taken from airplanes and satellites) and geographic information systems (GIS) data to map large forest or range areas and to detect widespread trends of forest and land use. They make extensive use of hand-held computers and global positioning systems (GPS) to study these maps.

The following are some types of conservation scientists and foresters:

Procurement foresters buy timber by contacting local forest owners and negotiating a sale. This activity typically involves taking inventory on the type, amount, and location of all standing timber on the property. Procurement foresters then appraise the timber's worth, negotiate its purchase, and draw up a contract. The forester then subcontracts with loggers or pulpwood cutters to remove the trees and to help lay out roads to get to the timber.

Other foresters, mostly in the federal government, study issues facing forests and related natural resources. They may study issues such as tree improvement and harvesting techniques, global climate change, improving wildlife habitats, and protecting forests from pests, diseases, and wildfires.

Urban foresters live and work in larger cities and manage urban trees. They are concerned with quality-of-life issues, including air quality, shade, and storm water runoff. 

Conservation education foresters train teachers and students about issues facing forest lands.

Two of the most common types of conservation scientists are range managers and soil conservationists.

Range managers, also called range conservationists, protect rangelands to maximize their use without damaging the environment. Rangelands contain many natural resources and cover hundreds of millions of acres in the United States, mainly in the western states and Alaska.

Range managers may inventory soils, plants, and animals; develop resource management plans; help to restore degraded ecosystems; or help manage a ranch. They also maintain soil stability and vegetation for uses such as wildlife habitats and outdoor recreation. Like foresters, they work to prevent and reduce wildfires and invasive animal species.

Soil and water conservationists give technical help to people who are concerned with the conservation of soil, water, and related natural resources. For private landowners, they develop programs to make the most productive use of land without damaging it. They also help landowners with issues such as dealing with erosion. They help private landowners and governments by advising on water quality, preserving water supplies, preventing groundwater contamination, and conserving water.