Results 61 to 70 of about 272,872 (323)

Cratering behaviour and faecal C:N ratio in relation to seasonal snowpack characteristics in a High-Arctic ungulate

open access: yesPolar Research, 2017
Snow and ice determine winter forage availability for Arctic herbivores. Winter precipitation is anticipated to increase, and icing following warm spells and rain-on-snow (ROS) are likely to become more frequent. While this may reduce herbivore survival,
Larissa T. Beumer   +2 more
doaj   +1 more source

Investigating a Renewable-Resource-Targeting Mobile Aquaculture System Using Route Optimization Based on Optimal Foraging Theory

open access: yesJournal of Marine Science and Engineering, 2023
Aquaculture systems require careful consideration of location, which determines water conditions, pollution impacts, and hazardous conditions. Mobility may be able to address these factors while also supporting the targeting of renewable energy sources ...
Jeff Grasberger, Dominic Forbush
doaj   +1 more source

Evolution in Archaeology [PDF]

open access: yes, 2008
This review begins with a brief outline of the key concepts of Darwinian archaeology. Its history is then summarized, beginning with its emergence as a significant theoretical focus within the discipline in the early 1980s; its main present-day currents ...
Shennan, SJ
core   +1 more source

Investigating Optimal Foraging Theory in the Laboratory

open access: yesThe American Biology Teacher, 2014
Optimal foraging theory is a principle that is often presented in the community ecology section of biology textbooks, but also can be demonstrated in the laboratory. We introduce a lab activity that uses an interactive strategy to teach high school and/or college students about this ecological concept.
Siegfried Harden, Matthew E. Grilliot
openaire   +1 more source

Climate Change Mitigation in the Dairy Sector: Uncovering Heterogeneity Through Eco‐Efficiency Clubs

open access: yesAgribusiness, EarlyView.
ABSTRACT Combining climate change goals with economic targets is crucial for the dairy sector, which is a significant contributor to agricultural greenhouse gas (GHG) emissions worldwide. In this paper, we assess economic and climate change implications of dairy production with panel data of Irish dairy farms from 2013 to 2021.
Doris Läpple   +2 more
wiley   +1 more source

Nonlinear Dynamic in an Ecological System with Impulsive Effect and Optimal Foraging

open access: yesAbstract and Applied Analysis, 2014
The population dynamics of a three-species ecological system with impulsive effect are investigated. Using the theories of impulsive equations and small-amplitude perturbation scales, the conditions for the system to be permanent when the number of ...
Min Zhao, Chuanjun Dai
doaj   +1 more source

Shifting Deer Hunting Strategies as a Result of Environmental Changes along the Little and Great Miami Rivers of Southwest Ohio and Southeast Indiana [PDF]

open access: yes, 2020
This study analyzes white-tailed deer (Odocoileus virginianus) remains from five Fort Ancient archaeological sites along the Little and Great Miami Rivers of southwest Ohio and southeast Indiana to compare how the combination of varying ecologies ...
Baker, Sydney
core  

The emergence of leaders and followers in foraging pairs when the qualities of individuals differ [PDF]

open access: yes, 2008
Background Foraging in groups offers animals a number of advantages, such as increasing their likelihood of finding food or detecting and avoiding predators.
Cowlishaw, G   +4 more
core   +2 more sources

Climate‐Smart Dairy Practices: The Role of Practice Clusters in Enhancing the Performance of Dairy Farms in Kenya

open access: yesAgribusiness, EarlyView.
ABSTRACT Climate variability is affecting the productivity, profitability, and resilience of smallholder dairy producers in developing countries. The adoption of climate‐smart (CS) dairy practices has been promoted to mitigate these negative effects. However, while interest in dairy CS practices is growing, empirical evidence on their adoption patterns
Mercy Mburu   +4 more
wiley   +1 more source

Leave or stay? Video-logger revealed foraging efficiency of humpback whales under temporal change in prey density.

open access: yesPLoS ONE, 2019
Central place foraging theory (CPF) has been used to predict the optimal patch residence time for air-breathing marine predators in response to patch quality.
Yu Akiyama   +7 more
doaj   +1 more source

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