Results 11 to 20 of about 16,314 (251)

Influence of Agricultural Expansion and Human Disturbance on the Encounter Rates of Nocturnal Mammals in Tropical Hill Forests in Bangladesh

open access: yesEcologies, 2023
Agricultural expansion has had a detrimental effect on tropical forests and the animal communities that depend on them. Agroforestry systems, however, with their more complex tree and plant communities, have been shown to be important habitats for a ...
Hassan Al-Razi   +5 more
doaj   +1 more source

Jenis-Jenis Bintang Laut Dan Bulu Babi (Asteroidea, Echinoidea: Echinodermata) Di Perairan Pulau Cilik, Kepulauan Karimunjawa

open access: yesJurnal Kelautan Tropis, 2018
Echinoderms are fundamentally good indicators of health and status of coralline communities in marine waters. Substrat of sandy, rububle and coral reefs are good habitat for Asteroidea dan Echinoidea.
Retno Hartati   +4 more
doaj   +1 more source

Tree reproductive phenology determines the abundance of medium-sized and large mammalian assemblages in the Guyana shield of the Brazilian Amazonia

open access: yesAnimal Biodiversity and Conservation, 2020
Assemblages of medium and large–sized mammals were studied in the Guyana shield of the Brazilian Amazonia. Diurnal and nocturnal line–transect samplings were carried out via the line–transect method in five different forest types along a 10–km transect,
A. R. Mendes Pontes   +3 more
doaj   +1 more source

The "Tracked Roaming Transect" and distance sampling methods increase the efficiency of underwater visual censuses. [PDF]

open access: yesPLoS ONE, 2018
Underwater visual census (UVC) is the most common approach for estimating diversity, abundance and size of reef fishes in shallow and clear waters. Abundance estimation through UVC is particularly problematic in species occurring at low densities and/or ...
Alejo J Irigoyen   +5 more
doaj   +1 more source

Common opossum population density in an agroforestry system in Bolivia [PDF]

open access: yesActa Amazonica, 2020
The common opossum, Didelphis marsupialis thrives near human settlements. Understanding its ecology could help planning management decisions about this species, especially in anthropogenic landscapes.
Camila BENAVIDES   +2 more
doaj   +1 more source

THE DIVERSITY OF REPTILES ON SEVERAL HABITAT TYPES IN CAMPUS AREA OF SRIWIJAYA UNIVERSITY INDRALAYA, OGAN ILIR

open access: yesBiovalentia: Biological Research Journal, 2015
The Diversity of Reptiles on Several Habitat Types  in Campus Area of Sriwijaya University Indralaya, Ogan Ilir was aimed to determine the diversity of amphibian species present in this area.
Wenny Saptalisa   +2 more
doaj   +1 more source

Distance Sampling in R

open access: yesJournal of Statistical Software, 2019
Estimating the abundance and spatial distribution of animal and plant populations is essential for conservation and management. We introduce the R package Distance that implements distance sampling methods to estimate abundance. We describe how users can
David L. Miller   +4 more
doaj   +1 more source

Response of an Indicator Species, Dryopteris crassirhizoma, to Temporal and Spatial Variations in Sika Deer Density

open access: yesBiology, 2022
Identifying appropriate indicator species for the impact of deer on forest vegetation is crucial for forest management in deer habitats and is required to be sensitive to temporal and spatial variations in deer density.
Yoshihiro Inatomi   +4 more
doaj   +1 more source

Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot (Lota lota)

open access: yesIntegrated Environmental Assessment and Management, EarlyView., 2023
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves   +6 more
wiley   +1 more source

Estimating the density of Red Junglefowl Gallus gallus (Galliformes: Phasianidae) in the tropical forest of Similipal Tiger Reserve, eastern India

open access: yesJournal of Threatened Taxa, 2016
To determine population status of wild animal using reliable sampling techniques forms an important component of conservation effort and effective wildlife management.
Himanshu S. Palei   +2 more
doaj   +1 more source

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