A5025298444- Wildlife Ecology and Conservation
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Avian ecology and behavior
- Ecology and Vegetation Dynamics Studies
- Aquaculture disease management and microbiota
- Amphibian and Reptile Biology
- Vibrio bacteria research studies
- Bird parasitology and diseases
- Aquaculture Nutrition and Growth
- Forest Insect Ecology and Management
- Fish Ecology and Management Studies
- Identification and Quantification in Food
- Animal Nutrition and Physiology
- Plant and animal studies
- Environmental Conservation and Management
- Rangeland and Wildlife Management
- Aquatic Invertebrate Ecology and Behavior
- Economic and Environmental Valuation
- Evolution and Genetic Dynamics
- Genetic and phenotypic traits in livestock
- Microbial Community Ecology and Physiology
- Biological Control of Invasive Species
- Animal Behavior and Welfare Studies
- Botany and Plant Ecology Studies
Newcastle University
2015-2024
Parks and Wildlife Service
2008-2019
Federation University
2015-2019
Game & Wildlife Conservation Trust
1987-2017
Animal and Plant Health Agency
2014-2017
Hunter Genetics
2006
Fera Science (United Kingdom)
2006
Heriot-Watt University
1993-2005
Royal Society for the Protection of Birds
2004
Auckland City Hospital
2003
Analysis of habitat use based on radio—tagged animals presents difficulties inadequately addressed by current methods. Areas concern are sampling level, data pooling across individuals, non—independence proportions, differential groups animals, and arbitrary definition availability. We advocate proportional individual as a basis for analysis. Hypothesis testing such nonstandard multivariate is done compositional analysis, which encompasses all MANOVA/MANCOVA—type linear models. The...
Indirect effects of pesticides, operating through the food chain, have been proposed as a possible causal factor in decline farmland bird species. To demonstrate such link, evidence is needed (1) an effect abundance on breeding performance or survival; (2) survival population change; and (3) pesticide resources, sufficient to reduce survival, hence affect rate change. Evidence under all three categories only available for one species, Grey Partridge Perdix perdix , although data showing...
Abstract Managing the impacts of invasive alien species (IAS) is a great societal challenge. A wide variety terms have been used to describe management and sequence in which they might be applied. This lack consistency creates uncertainty presentation description policy, science practice. Here we expand on existing invasion process develop an IAS framework. We define different forms active using novel approach based changes status, avoiding need for stand-alone descriptions types, provide...
Summary The UK population of yellowhammers has declined since the mid‐1980s. Concurrent increases in use pesticides are believed to have reduced availability food resources for farmland birds, including yellowhammers. To mitigate consequences insecticide applications on yellowhammer productivity, relationships between application, arthropod abundance and breeding success require quantification. We studied nesting a lowland arable farm North Yorkshire 2001 2003, examine effects abundance....
1. A two-host shared-macroparasite model was parameterized from the results of infection and transmission experiments, to investigate whether apparent competition between ring-necked pheasant (Phasianus colchicus) grey partridge (Perdix perdix), mediated via shared nematode Heterakis gallinarum, could theoretically cause exclusion. 2. Both created experiments conducted show that bulk H. gallinarum partridges, when they occur in same locations as pheasants, will be pheasants not partridges...
Abstract The growing focus on the threat of invasive non-native species (INNS) in international biodiversity targets highlights a need for targeted research to support effective understanding, legislation, and management. However, publishing landscape invasion biology is complex expanding rapidly, making consolidation information increasingly challenging. To identify major themes INNS literature understand how these have changed over last 35 years, we applied topic modelling approach. We...
ABSTRACT Predation events involving reptiles, especially those between cryptic species, are infrequently documented making each observation valuable for understanding ecological interactions. Here, we present a rare record of predation the endangered Pink-tailed Worm-lizard Aprasia parapulchella and Dwyer's Snake Suta dwyeri in Goldfields bioregion central Victoria. A field acquisition stomach contents allowed us to document this instance an adult S. having predated upon A. parapulchella. We...
Fourteen species of Vibrio were screened for chitin‐induced chitinase activity in culture medium. V. carchariae, alginolyticus 283 and campbellii showed high levels activity. Screening on agar plates containing swollen chitin by the same three species, also fischeri 284. An affinity purification procedure was developed from carchariae. The purified active as a monomer with Mr 63 000–66 000, displayed toward polymeric acetylated chitosan or crab shells. N‐terminal sequence analysis...
Abstract Squamate reptiles are significant components of woodland vertebrate communities in eastern Australia, but their ecology is poorly understood. We investigated seasonal variation habitat use by the Inland Carpet Python, Morelia spilota metcalfei Wells and Wellington (Pythonidae), a threatened snake that inhabits environments Murray–Darling Basin. Nine pythons were radiotracked within near Mount Meg Flora Fauna Reserve north‐eastern Victoria to investigate how structure prey...
A total of 1487 observations nine species arboreal mammal, Acrobates pygmaeus, Phascolarctos cinereus, Petauroides volans, Petaurus australis, P. breviceps, norfolcensis, Pseudocheirusperegrinus, Trichosurus caninus and T. vulpecula, were made during surveys the vertebrate fauna northeastern Victoria. Habitat use by each was examined in relation to eight forest types that occur along an environmental gradient ranging from sites at high elevation with a annual rainfall, on dry inland riverine...
We describe a management technique whereby the adverse effects of pesticides on game-bird chick production were alleviated following selective use or avoidance edges cereal crops. This (known as Conservation Headlands) provided increased amounts food resources necessary for young gray partridge (Perdix perdix) and ring-necked pheasant (Phasianus colchicus) chicks. The Headlands has consistently average numbers chicks per brood both species via increases in densities arthropods weed plants....
Scottish upland moorland dominated by heather Calluna vulgaris is the primary habitat for red grouse Lagopus lagopus scoticus, and has been declining since 1940s. At same time numbers have also fallen. We compared land cover change on sites managed shooting (1945–1990), which were in 1940s but management had stopped 1980s. Land type (N = 229) containing >10% examined during 1940s, 1970s Grouse existed 49% of a number fallen to 20% In there no significant differences between areas that...
Abstract The role of diet on the growth, survival and movement red grouse Lagopus lagopus scoticus chicks was examined. We compared two areas moorland in Scotland: a dry heath with low density poor chick survival; wetter heath/bog relatively higher numbers rates survival. There were no differences clutch size or proportion eggs hatching between moors but brood significantly lower heath. Radio‐tagged hens broods monitored during first 12 days following hatching; captured, weighed faecal...