Topography

Slope, aspect, or elevation

Vegetation Cover Data Sets

Click on the links below to view Vegetation data sets from participating LTERs.

H. J. Andrews (Temperate Forest, Oregon)

Central Arizona- Phoenix (Urban Desert, Arizona)

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Designing a Research Project Walkthrough

Overview

Scientists conduct research to investigate patterns occurring in the natural world around them.

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Cómo determinar el contenido de humedad en el suelo

Introducción:

Todos sabemos que el agua es necesaria para vivir: especialmente para las plantas. Por consiguiente, si el suelo tiene una buena capacidad de retención del agua, se esperaría que pudiera sustentar una comunidad de plantas considerable.

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Infiltración del agua

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Mientras más ligero entre el agua en el suelo, menos probable será que corra por tierra, y cause erosión. El agregado es la estructura básica del suelo, incluyendo las partículas de suelo (arena, cieno y arcilla) y el humus que se encuentra en el suelo.

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Cómo medir el Diámetro de los Árboles, el Tamaño de la Clase y el Diámetro Promedio de la Especie

Introducción:

 

Esta actividad utiliza una cinta métrica especial que convierte la circunferencia de un árbol en diámetro. Esta cinta permite a los silvicultores dar rápidamente con el diámetro de un árbol sin recurrir al cálculo, lo cual representa un gasto de tiempo en el campo.

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Student Reading: Aerial Photography and Forest Fragmantation

Remote sensing is one of many techniques that forest managers and scientists use to study ecological processes in forest ecosystems. “Remote” simply means that the forest is being studied or measured from a distance. For example, airplanes and satellites, often equipped with radar and thermal scanners, can be used to take photographs, capture video recordings, or take sophisticated measurements of forested landscapes.

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Measuring Tree Diameter, Class Size, and Average Species Diameter

Scientists classify tree size by measuring tree diameter. The investigators will measure the diameter of trees, determine tree crown class, calculate average species densities, calculate average tree diameters, and calculate size classes of the trees. Scientists classify tree size by measuring tree diameter. The investigators will measure the diameter of trees, determine tree crown class, calculate average species densities, calculate average tree diameters, and calculate size classes of the trees.

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Water Infiltration

If rainwater cannot penetrate the soil it remains on the surface where it

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Soil Moisture Content

Plants can only absorb nutrients that are dissolved in water. The investigators will determine the soil water content through weight. This can also be done with soil bulk density protocol.

Click here for online protocol

 

 

 

 

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Microclimates

The contour of the land, materials of land cover, the presence or absence of plants, moisture and time of day may result in many climates (microclimates) within one ecosystem. The investigators will study and compare various microclimates in a specific region.

 

Image Thanks to: Ian Britton, FreeFoto.com

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Complexity

Ecological complexity depends upon species diversity and the structure of species interactions. Complex ecosystems are hierarchically controlled, characterized by non-linear feedback loops, and exhibit patterns that can be observed over many different spatial and temporal scales.

Ecological complexity depends upon species diversity and the structure of species interactions. Complex ecosystems are hierarchically controlled, characterized by non-linear feedback loops, and exhibit patterns that can be observed over many different spatial and temporal scales.

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