Results 41 to 50 of about 1,418,943 (330)

Calibrating abundance indices with population size estimators of red back salamanders (Plethodon cinereus) in a New England forest [PDF]

open access: yesPeerJ, 2015
Herpetologists and conservation biologists frequently use convenient and cost-effective, but less accurate, abundance indices (e.g., number of individuals collected under artificial cover boards or during natural objects surveys) in lieu of more accurate,
Ahmed A. Siddig   +2 more
doaj   +2 more sources

Contribution of Agricultural Landscape Composition on Shaping the Interaction Between Pests and Natural Enemies in Cacao Agroforestry

open access: yesAGRIVITA Journal of Agricultural Science, 2022
Studies of the effects of landscape composition on pests and their natural enemies on agroforestry systems is still limited, whereas the system can maintain biodiversity.
Akhmad Rizali   +5 more
doaj   +1 more source

The natural partial order on an abundant semigroup [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 1987
In this paper we will study the properties of a natural partial order which may bedefined on an arbitrary abundant semigroup: in the case of regular semigroups werecapture the order introduced by Nambooripad [24]. For abelian PP rings our order coincides with a relation introduced by Sussman [25], Abian [1, 2] and further studied by Chacron [7 ...
openaire   +2 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Toward a Natural Theology of Abundance: Reorientation to a Sacramental Reality

open access: yesReligions, 2023
This paper presents the Christian incorporation and transformation of the philosophical understanding of the relation between the material and immaterial.
Annalea Rose Thiessen
doaj   +1 more source

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Meta-analysis of tree diversity effects on the abundance, diversity and activity of herbivores' enemies

open access: yesBasic and Applied Ecology, 2022
The natural enemies hypothesis predicts that the abundance and diversity of antagonists such as predators and parasitoids of herbivores increases with the diversity of plants, which can lead to more effective top-down control of insect herbivores ...
Alex Stemmelen   +3 more
doaj   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

open access: yesPopulation Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa   +2 more
wiley   +1 more source

Climatic, Regional Land-Use Intensity, Landscape, and Local Variables Predicting Best the Occurrence and Distribution of Bee Community Diversity in Various Farmland Habitats in Uganda

open access: yesPsyche: A Journal of Entomology, 2013
This study was conducted in 2006 in central Uganda to provide baseline data on relationships between bee community variables and local, climatic, landscape and regional drivers affecting bee community abundance and diversity in agricultural landscapes ...
M. B. Théodore Munyuli
doaj   +1 more source

The strength and form of natural selection on transcript abundance in the wild [PDF]

open access: yesMolecular Ecology, 2020
AbstractGene transcription variation is known to contribute to disease susceptibility and adaptation, but we currently know very little about how contemporary natural selection shapes transcript abundance. Here, we propose a novel analytical framework to quantify the strength and form of ongoing natural selection at the transcriptome level in a wild ...
Ilkka Nousiainen   +10 more
openaire   +6 more sources

Home - About - Disclaimer - Privacy