A5082147720- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Animal Ecology and Behavior Studies
- Ecology and Vegetation Dynamics Studies
- Fish Ecology and Management Studies
- Rangeland and Wildlife Management
- Climate variability and models
- Bird parasitology and diseases
- Marine and fisheries research
- Marine animal studies overview
- Environmental Conservation and Management
- Identification and Quantification in Food
- Animal Vocal Communication and Behavior
- Animal Behavior and Welfare Studies
- Ecology and biodiversity studies
- Species Distribution and Climate Change
- Plant Ecology and Soil Science
- Wildlife-Road Interactions and Conservation
- Animal Behavior and Reproduction
Dragonfly Data Science (New Zealand)
2012-2025
Massey University
2008-2021
Abstract The identification of geographic areas where the densities animals are highest across their annual cycles is a crucial step in conservation planning. In marine environments, however, it can be particularly difficult to map distribution species, and methods used usually biased towards adults, neglecting other life‐history stages even though they represent substantial proportion total population. Here we develop methodological framework for estimating population‐level density...
1. Landscape connectivity, the ability of species to move between different elements a landscape, has been evaluated mainly by expert opinion, proxy data or homing experiments, all which have major limitations. Cost distance modelling can overcome these limitations, but resistance values landscape are difficult estimate. 2. Here, we present novel method combining step selection functions with cost assess functional connectivity. Instead relying on movement metrics, uses case-control design...
Abstract Because of finite resources, organisms face conflict between their own self‐care and reproduction. This is especially apparent in avian species with female‐only incubation, where females a trade‐off time allocated to self‐maintenance the thermal requirements developing embryos. We recorded incubation behaviour New Zealand robin ( Petroica longipes ), male feeding high nest predation rates. examined how feeding, ambient temperature food availability (invertebrate biomass) affected...
Managed pine plantations now constitute a large portion of mainland New Zealand.Despite many native birds inhabiting these exotic habitats, their value for biodiversity conservation is unclear.Although numerous studies have quantified densities bird species in plantations, it unknown whether individuals self-sustaining populations.Here we address this question North Island robins (Petroica longipes) Pinus radiata plantation the central Island.We compare survival and reproduction data...
ABSTRACT The continental shelf and shelf‐break of the Southwest Atlantic are among most productive biodiverse regions globally. Incidental mortality from fishing activities poses a significant threat to seabird populations in this area. overlap between operations distributions leads bycatch, particularly longline fisheries where seabirds get hooked during setting or hauling operations. This study is first Argentina assess incidental considering cryptic mortality. We estimated potential...
Abstract Forest fragments have biodiversity value that may be enhanced through management such as control of non‐native predators. However, efforts ineffective, and research is needed to ensure predator done strategically. We used Bayesian hierarchical modeling estimate fragment‐specific effects experimental rat on a native species targeted for recovery in New Zealand pastoral landscape. The experiment was modified BACI (before‐after‐control‐impact) design conducted over 6 years 19 forest...
Declines of species in fragmented landscapes can potentially be reversed either by restoring connectivity or local habitat quality. Models fitted to snapshot occupancy data used predict the effectiveness these actions. However, such inferences misleading if reliability and landscape metrics is unknown. The only way unambiguously resolve roles quality metapopulation dynamics conduct experimental reintroductions unoccupied patches so that measured directly from on vital rates. We, therefore,...
Armstrong, D. P., Y. Richard, J. G. Ewen, and W. Dimond. 2008. Avoiding hasty conclusions about effects of habitat fragmentation. Avian Conservation Ecology - Écologie et conservation des oiseaux 3(1): 8.http://dx.doi.org/10.5751/ACE-00234-030108
Demographic rates, such as annual survival rate, are generally difficult to estimate for long-lived seabirds, because of the length time required this kind study and remoteness colonies. However, a small colony northern royal albatross (Diomedea sanfordi) established itself on mainland New Zealand at Taiaroa Head, making possible regular banding monitoring its individuals since first chick fledged, in 1938. Data presence/absence birds, well breeding outcomes, were available period from...
Demographic rates, such as annual survival rate, are generally difficult to estimate for long-lived seabirds, because of the length time required this kind study and remoteness colonies. However, a small colony northern royal albatross ( Diomedea sanfordi ) established itself on mainland New Zealand at Taiaroa Head, making possible regular banding monitoring its individuals since first chick fledged, in 1938. Data presence/absence birds, well breeding outcomes, were available period from...
Demographic rates, such as annual survival rate, are generally difficult to estimate for long-lived seabirds, because of the length time required this kind study and remoteness colonies. However, a small colony northern royal albatross ( Diomedea sanfordi ) established itself on mainland New Zealand at Taiaroa Head, making possible regular banding monitoring its individuals since first chick fledged, in 1938. Data presence/absence birds, well breeding outcomes, were available period from...
Abstract Seabirds are globally threatened. In the face of multiple threats, it is critical to understand how conservation strategies that mitigate one threat intersect with others impact population viability. Marine including pollution, climate change, and fisheries could derail gains seabird populations resulting from arduous predator eradication efforts. However, this potentially negative effect yet be evaluated. We test whether mortality marine threats can subvert on-going recovery 17...