USE OF SOIL HORIZONS AS ECOLOGICAL SAMPLING UNITS

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Use of Soil Electroconductivity in a Multistage Soil-Sampling Scheme

The inherent variability of pasturelands makes it difficult to sample soils and accurately characterize a pasture. Indirect methods such as soil electroconductivity (EC) can be used to rapidly, noninvasively, and inexpensively quantify soil variability. The objective of this study was to determine if rapidly collected, georeferenced soil information could be used to propose an accurate, multist...

متن کامل

Soil Sampling

J Ste Fundin … and jus The U.S. and applic identity, r status, sex program, funded by activities.

متن کامل

Sampling Ecological Occurrence Matrices

Ecological occurrence matrices, such as Darwin finches tables, are 0, 1-matrices whose rows are species of animals and colums are islands, and the (i, j) entry is 1 if animal i lives in island j, and is 0 otherwise. Moreover the row sums and columns sums are fixed by field observation of these islands. These occurence matrices are thus just bipartite graphs G with a fixed degree sequence and wh...

متن کامل

Diatoms as Indicators of Water Quality and Ecological Status: Sampling, Analysis and Some Ecological Remarks

The algal species that develop in an area depend on different environmental factors: salinity, temperature, pH, water velocity, shading, depth, availability of substrata to grow on, water chemistry, etc. Thus, the species that can be found in a water body will inform about some characteristics of the water. Because algae are good indicators of the features of the water, they are used to monitor...

متن کامل

Sampling networks of ecological interactions

Sampling ecological interactions presents similar challenges, problems, potential biases, and constraints as sampling individuals and species in biodiversity inventories. Robust estimates of the actual number of interactions (links) among free-living species within diversified ecological networks require adequate sampling effort that needs to be explicitly gauged, yet we still lack a sampling t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Canadian Journal of Soil Science

سال: 1988

ISSN: 0008-4271,1918-1841

DOI: 10.4141/cjss88-014