Results 11 to 20 of about 15,111 (152)

A Unimodal Model for Double Observer Distance Sampling Surveys. [PDF]

open access: yesPLoS ONE, 2015
Distance sampling is a widely used method to estimate animal population size. Most distance sampling models utilize a monotonically decreasing detection function such as a half-normal.
Earl F Becker, Aaron M Christ
doaj   +1 more source

Technique to study the impact of large herbivores on woody vegetation within piospheres

open access: yesKoedoe: African Protected Area Conservation and Science, 2000
A continuously sampled transect away from a watering point provides good results in situations where geology and soil type remain constant, but is unsuitable to apply where regular changes in soil type occur.
J. Brits, M.W. van Rooyen, N. van Rooyen
doaj   +1 more source

Efficiency of Canopy Cover Measurement of Artemisia sieberi Stands by Two Sampling Methods in Different Lengths (Case study: Steppe Vegetation of Baft Region, Iran) [PDF]

open access: yesEnvironmental Resources Research, 2017
This research has been conducted to establish a wheel-point device and evaluate its efficiency (precision, accuracy and time) with respect to the estimation of canopy percent in a pilot Artemisia stand in Khabr region of Baft, Kerman province, Iran in ...
Reza Bagheri, Mohamad Ali Alizadeh
doaj   +1 more source

Comparison of Point Intercept and Image Analysis for Monitoring Rangeland Transects [PDF]

open access: yesRangeland Ecology & Management, 2011
There is global recognition that sustainable land use requires monitoring that will detect change on a scale that protects the resource. That fundamental necessity is threatened where labor-intensive methods and high labor costs cause sampling deficiencies and increased Type-II error rates (false negatives).
J. Cagney, S.E. Cox, D.T. Booth
openaire   +1 more source

Monitoring Wolf Populations Using Howling Points Combined With Sign Survey Transects [PDF]

open access: yesWildlife Biology in Practice, 2005
Wolves respond to simulated howling, especially during the mating and breeding seasons. Simulated howling points are, therefore, commonly used by many wolf researchers around the world to estimate pack numbers in a given area. A large amount of information is available on various pack breeding\ud areas in Asturias, the only region in north-western ...
Llaneza, L   +3 more
openaire   +3 more sources

Bayesian Spatial Point Process Modeling of Line Transect Data

open access: yesJournal of Agricultural, Biological, and Environmental Statistics, 2010
Peer ...
Niemi, A., Fernández, C.
openaire   +4 more sources

Macroinvertebrates Diversity in Sundak Beach, Gunung Kidul, Yogyakarta

open access: yesJurnal Biota, 2021
Macroinvertebrate diversity is one of the biologicals and ecological indicators that allow it to become a reference in determining water quality. This study aimed to inventory and study the diversity of macroinvertebrate species using the 1 x 1 m2 ...
Yunita Fera Rahmawati
doaj   +1 more source

Diversity of parasitoid Hymenoptera in banana germplasm plantation Yogyakarta

open access: yesJurnal Biologi Udayana, 2019
Banana is one of the fruits in Indonesia. The development of its production in Indonesia has increased. However, there are several factors that can reduce the production, one of which is pests. Pests on bananas can be controlled with natural enemies, one
Ichsan Luqmana Indra Putra
doaj   +1 more source

KEANEKARAGAMAN JENIS LAMUN SEBAGAI SUMBER PAKAN DUGONG DUGON PADA DESA BUSUNG BINTAN UTARA KEPULAUAN RIAU

open access: yesOmni-Akuatika, 2014
Seagrass species diversity as a source of feed Dugong dugon was studied in Busung North Bintan, Riau Islands during November 2014. The purpose of this study is to determine the diversity of seagrass species found on the feeding ground area.
Juraij Juraij   +2 more
doaj   +1 more source

Dominance and Diversity of Bird Community in Floodplain Forest Ecosystem

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2015
The paper is aimed to assessment of diversity and structure of bird community in floodplain forest ecosystem. Authors present results of analyses data on bird communities obtained at two transects in the Litovelské Pomoraví Protected Landscape Area ...
Karel Poprach, Jana Vrbková
doaj   +1 more source

Home - About - Disclaimer - Privacy