A5078871744- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Ecology and Vegetation Dynamics Studies
- Avian ecology and behavior
- Coral and Marine Ecosystems Studies
- Crustacean biology and ecology
- Animal Ecology and Behavior Studies
- Marine Invertebrate Physiology and Ecology
- Cephalopods and Marine Biology
- Amphibian and Reptile Biology
- Marine Biology and Ecology Research
- Marine and fisheries research
- Marine Toxins and Detection Methods
- Ecology and biodiversity studies
- Plant Taxonomy and Phylogenetics
- Genetic diversity and population structure
- Animal Behavior and Reproduction
- Echinoderm biology and ecology
- Remote Sensing and LiDAR Applications
- Marine Bivalve and Aquaculture Studies
- Marine Ecology and Invasive Species
- Parasite Biology and Host Interactions
- Micro and Nano Robotics
- Rabbits: Nutrition, Reproduction, Health
- Science and Climate Studies
University of Plymouth
2017-2025
The Peregrine Fund
2018-2024
Peregrine Power (United States)
2018-2024
Warburtons (United Kingdom)
2024
University of Alaska Fairbanks
2020
University of Alberta
1964-1970
Google (United States)
1961
The five stages in the behaviour pattern by which Calliactis parasitica transfers to shells of Buccinum , normally occupied Pagurus bernhardus are described. first these, clinging tentacles shell, is a trigger for as whole; it occurs already settled on glass or plastic, and more consistently, whose pedal disks unattached. Tests frequency speed response under various conditions gave this information: ( ) individual used vary greatly potency; b cling Pecten Mytilus but only erratically after...
Abstract Predicting invasion risk to novel environments is essential for management and conservation decision making but the evolutionary lineage at which make these predictions often unclear. Here we predict current suitability across United Kingdom (UK) alpine newt Ichthyosaura alpestris , a species with complex history, broad native range, growing number of introduced populations anecdotal reports ecological consequences amphibian communities. We use distribution niche modelling...
The association between Calliactis parasitica and the Mediterranean hermit crab, Dardanus arrosor , has been re-examined. It was confirmed that, unlike Atlantic Pagurus bernhardus can display an active behaviour pattern which assists transfer of to its shell. Extensive trials showed, however, a marked tendency for crabs divide into two groups: ‘performers’, show this almost without fail; ‘non-performers’, never activity. Most ‘performers’ were females ‘non-performers’ males. frequently...
Abstract Understanding species–environment relationships is key to defining the spatial structure of species distributions and develop effective conservation plans. However, for many species, this baseline information does not exist. With reliable presence data, models that predict geographic ranges identify environmental processes regulating distribution are a cost‐effective rapid method achieve this. Yet these lacking rare threatened particularly in tropical regions. The harpy eagle (...
Most raptor populations are declining and nearly a fifth threatened with extinction; thus there is need to increase collaboration ensure efficient effective research, management, conservation. Here, we introduce the Global Raptor Impact Network (GRIN; www.globalraptors.org), tool enhance conservation impact of research community. We provide an overview history current state GRIN, including plans for expansion. Predecessors GRIN include The African DataBank, which was launched in 2012...
In the midst of sixth mass extinction, limited resources are forcing conservationists to prioritize which species and places will receive conservation action. Evolutionary distinctiveness measures isolation a on its phylogenetic tree. Combining species' evolutionary with globally endangered status creates an EDGE score. We use scores that should be managed conserve bird history. analyzed all birds in countries important areas. examined parrots, raptors, seabirds depth because these groups...
Calliactis tricolor (Lesucur) lives most commonly in Puerto Rico as a commensal on Turbo and Fasciolaria shells, less Murex shells inhabited by the pagurid Dardanus venosus. The partnership is dependent response of anemone to shell than European between C. parasitica D. arrosor. Besides venosus, which active towards tricolor, another larger pagurid, Petrochirus diogenes, spider crab Stenocionops furcata display extremely effective behavior patterns transferring anemone. S. may carry many 20...
Abstract Aim A current biogeographic paradigm states that climate regulates species distributions at continental scales and biotic interactions are undetectable coarse‐grain extents. However, advances in spatial modelling show incorporating food resource important for improving model predictions large distribution scales. This is particularly relevant to understand the factors limiting of widespread apex predators whose diets likely vary across their range. Location Neotropical Central South...
ABSTRACT The discharge of tentacular nematocysts in response to food was studied Stomphia coccinea before and during swimming, the period resettling. tendency Stomphia’?, on contact with virtually disappeared swimming response. disappearance nematocyst coincided release pedal disk; its reappearance re-attachment disk. Objects rubbed aboral surface Dermasterias can cause if brought into a single tentacle Stomphia. A general inhibition objects set up by flooding crown extract. local when...
Abstract Many range‐restricted taxa are experiencing population declines, yet we lack fundamental information regarding their distribution and size. Establishing baseline estimates for both of these key biological parameters is however critical directing conservation planning at‐risk species. The International Union the Conservation Nature (IUCN) Red List uses three range metrics that define species distributions inform extinction risk assessments: extent occurrence (EOO), area occupancy...
Understanding raptor diet is important when managing raptors of conservation concern, especially those experiencing population declines across parts their range. Most traditional methods to study diet, such as indirect analysis pellets and prey remains, tend be biased towards larger more easily identifiable items. However, biases can partly addressed by combining with recent direct approaches stable isotope analysis. Here, we combine compare the use pellet dissection explore spatial...
The pedal disc was studied during the "swimming" response of Stomphia coccinea by use photography and visual aids, certain experimental procedures, histological preparations. At moment release, deep ridges clefts appeared along lines mesenteries, reducing surface area about one-half. Circular muscles on vertically inserted at bases mesenteries were seen. These together would account for observed pattern. breaking adhesive sole furrowing surface, concavity produced parietobasilar...
Accurate species distribution data across remote and extensive geographical areas are difficult to obtain. Here, we use bioclimatic envelope models determine climatic constraints on the of migratory Saker Falcon Falco cherrug identify in data‐deficient regions that may contain unidentified populations. Sakers live at low densities large ranges regions, making status assess. Using presence‐background eight variables within a modelling framework, applied MaxEnt construct for both breeding...
Determining a species' geographic range is important for conservation planning, yet this information lacking many raptors. In rapidly changing environments, defining current and predicting future distributions can help define priority areas monitoring research. The Laggar Falcon (Falco jugger) rare understudied raptor resident across the Indian subcontinent, categorized as Near Threatened, with populations potentially in rapid decline. Using Species Distribution Modelling framework we update...
ABSTRACT The swimming response of Stomphia coccinea evoked by electrical stimuli has been re-examined. Contrary to earlier accounts, definite relationships have discovered between the occurrence and number, frequency intensity applied. At higher frequencies (1 stimulus/0·4 sec.), 4·6 cause swimming; at lower stimulus/3·0 24−40 are needed produce same effect. Stronger required evoke than retraction response. constant durations, threshold for is least 50% above voltage retraction; voltage,...
Alaskan Arctic shelf communities are currently experiencing dramatic changes that will likely affect ecosystem functioning of marine benthic communities. Here, functional diversity based on biological traits was used to assess differences and similarities in between 2 systems geographically close but vary many environmental influences: the Beaufort Chukchi Sea epibenthic We hypothesized (1) patterns composition metrics reflect taxonomic these communities; (2) distinct shelves. evaluated 9...
Climate change is expected to have a profound impact on species distributions, contracting suitable climate space. Biodiversity areas are important mitigate these negative effects but static by design and thus do not account for future projections of distributions. The Harpy Eagle Harpia harpyja has broad range across lowland Neotropical forests its distribution could be negatively affected when combined with current rates habitat loss. To test this hypothesis, we use spatial point process...
Swimming as a response of the sea anemone Actinostola new species can be elicited result contact with submarginal surface another swimming Stomphia coccinea. However, does not swim Actinostola. In all other known respects, is caused in both by same stimuli, including certain starfishes, nudibranch, and electrical stimuli. No agent that causes to has been detected extracts, rubbings, or dried matter from Stomphia.
Behavior patterns in the sea anemones Stomphia coccinea and Actinostala new species are described by which these animals settled preferentially on shells of Modiolus modiolus (commensal S. coccinea) after they have been made to swim response appropriate stimuli (the starfishes Dermasterias or Hippasteria, nudibranch Aeolidia papillosa, etc.). Tentacular oral contact without adhesion, followed great distension pedal disc some flexion column towards shell, were main components behavior...
Abstract Quantifying habitat use is important for understanding how animals meet their requirements survival and provides useful information conservation planning. Currently, assessments of range-wide that delimit species distributions are incomplete many taxa. The harpy eagle ( Harpia harpyja ) a raptor concern, widely distributed across Neotropical lowland forests, currently faces threats from increasing loss fragmentation. Here, we logistic regression modelling framework to identify...
Abstract Many range-restricted taxa are currently experiencing population declines yet lack fundamental information regarding distribution and size. Establishing baseline estimates for both these key biological parameters is however critical directing conservation planning at-risk species. The International Union the Conservation of Nature (IUCN) Red List uses three range metrics that define species distributions inform extinction risk assessments: extent occurrence (EOO), area occupancy...