A5040823740- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Invertebrate Ecology and Behavior
- Marine Biology and Ecology Research
- Physiological and biochemical adaptations
- Animal Behavior and Reproduction
- Marine Bivalve and Aquaculture Studies
- Ocean Acidification Effects and Responses
- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- thermodynamics and calorimetric analyses
- Field-Flow Fractionation Techniques
- Advanced Thermodynamics and Statistical Mechanics
- Environmental Toxicology and Ecotoxicology
- Marine and fisheries research
- Marine and coastal plant biology
- Ecology and Vegetation Dynamics Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coastal wetland ecosystem dynamics
- Parasite Biology and Host Interactions
- Hydrology and Sediment Transport Processes
- Genetic diversity and population structure
- Mollusks and Parasites Studies
- Animal Ecology and Behavior Studies
- Neurobiology and Insect Physiology Research
University of Plymouth
2013-2023
University of Exeter
2017
Google (United States)
2008-2016
Lund University
1991-2001
Cardiff University
1998
University of Wales
1991-1995
Queen Mary University of London
1990
Running waters are perhaps the most impacted ecosystem on planet as they have been focus for human settlement and heavily exploited water supplies, irrigation, electricity generation, waste disposal. Lotic systems also an intimate contact with their catchments so land-use alterations affect them directly. Here long-term trends in factors that currently impact running reviewed aim of predicting what main threats to rivers will be year 2025. The ultimate forcing change (ecosystem destruction,...
Carbon dioxide-induced ocean acidification is predicted to have major implications for marine life, but the research focus date has been on direct effects. We demonstrate that acidified seawater can indirect biological effects by disrupting capability of organisms express induced defences, hence, increasing their vulnerability predation. The intertidal gastropod Littorina littorea produced thicker shells in presence predation (crab) cues this response was disrupted at low pH. This...
Many phenotypic traits show plasticity but behaviour is often considered the 'most plastic' aspect of phenotype as it likely to quickest response temporal changes in conditions or 'situation'. However, has also been noted that constraints on sensory acuity, cognitive structure and physiological capacities place limits behavioural plasticity. Such may generate consistent differences between individuals from same population. It recently suggested these individual be adaptive term 'animal...
Habitat structure is one of the fundamental factors determining distribution organisms at all spatial scales, and vegetation primary importance in shaping structural environment for invertebrates many systems. In majority biotopes, live within stands mixed species composition, making estimates complexity difficult to obtain. Here we use fractal indices describe aquatic macrophytes, these are employed examine effects habitat on composition free‐living invertebrate assemblages that utilise...
SUMMARY 1. Hydrobiological changes were assessed along an altirudinal transect of eighteen to twenty‐three tributaries from 600 3750m in two adjacent river systems east‐central Nepal. The incorporated catchments under terraced agriculture at the lowest altitudes Likhu Khola, through streams forest, alpine scrub and tundra higher Langtang. 2. Diatoms, bryophytes, macroinvertebrates fish all showed pronounced altitudinal assemblage composition as shown by TWINSPAN DECORANA. A few taxa...
1. Habitat features and macroinvertebrate communities were surveyed in 66 predominantly upland streams throughout Wales Scotland to assess the efficacy of riparian management (as `buffer strips') protecting stream resources during commercial forestry. 2. data reduced by principal components analysis (PCA). Macroinvertebrates margins riffles considered separately, ordination community was DECORANA. 3. gradients recognized between from PCA included trends size, ionic strength, acidity,...
Abstract Physiological responses to temperature are known be a major determinant of species distributions and can dictate the sensitivity populations global warming. In contrast, little is about how other change drivers, such as ocean acidification (OA), will shape in future. Here, by integrating population genetics with experimental data for growth mineralization, physiology metabolomics, we demonstrate that gastropod Littorina littorea future OA shaped regional adaptation. Individuals from...
Molluscs are the second most species-rich phylum in animal kingdom, yet only 11 genomes of this group have been published so far. Here, we present draft genome sequence pulmonate freshwater snail Radix auricularia. Six whole shotgun libraries with different layouts were sequenced. The resulting assembly comprises 4,823 scaffolds a cumulative length 910 Mb and an overall read coverage 72×. contains 94.6% metazoan core gene collection, indicating almost complete coding fraction. discrepancy...
With both global surface temperatures and the incidence intensity of extreme temperature events projected to increase, assessment species' sensitivity chronic acute changes in has become crucial. Sensitivity predictions are based predominantly on adult responses, despite fact that early life stages may be more vulnerable thermal challenge. Here, we compared different history intertidal gastropod Littorina obtusata using death time curves, which incorporate duration heat stress, used these...
Trait compensation occurs when mechanically independent adaptations are negatively correlated. Here, we report the first study to demonstrate trait in predator–defence across several species. Freshwater pulmonate snails exposed experimentally predation chemical cues from fishes and crushed conspecifics showed clear interspecific differences their behavioural avoidance responses, which were correlated with shell crush resistance. The type of response varied between species: thin–shelled...
1. Dispersal ability influences the distribution and abundance of organisms, but empirical investigations relationship between dispersal composition ecological assemblages are scarce. Here, we compare between‐site variation in species richness community actively passively dispersing pond invertebrates. 2. Coleoptera (active dispersers) microcrustacea (passive were sampled over a season from 16 ponds within 4‐km radius south‐west England. Species related to environmental variables using...
1 Nestedness is a composite property of many suites biotas. Such patterns may be driven by dispersal limitation, species–area relationships, hierarchical niche requirements, or occur as an artefact passive sampling. Despite its widespread occurrence, few studies have explored the factors underlying nested subset structure, and ecological distinctions between non-nested (idiosyncratic) taxa within region been largely ignored. 2 Macroinvertebrate assemblages from 45 heathland ponds in...
A whole—stream enrichment experiment of phosphorus and, further down—stream, and nitrogen, allowed us to examine the growth density responses tube—building larval chironomid Orthocladius rivulorum nutrient Kuparuk River in arctic Alaska, evaluate effects on tube microbial community. The larva feeds by grazing a diatom monoculture Hannaea arcus from exterior, thus direct microbiota may translate into indirect larva. Electron microscopy indicated that silk was formed sheet, with filamentous...
In the future, marine organisms will face challenge of coping with multiple environmental changes associated increased levels atmospheric Pco2, such as ocean warming and acidification. To predict how may or not meet these challenges, an in-depth understanding physiological biochemical mechanisms underpinning organismal responses to climate change is needed. Here, we investigate effects elevated Pco2 temperature on whole-organism cellular physiology periwinkle Littorina littorea. Metabolic...
Many organisms have evolved morphological and behavioral traits that reduce their susceptibility to predation. However, few studies explicitly investigated the relationships between defensive susceptibility. Here we demonstrate a negative correlation defenses avoidance across several species of marine gastropod is linked vulnerability crab Snails had relatively taller shell spires (high aspect ratio) showed greater responsiveness when exposed predation cues than did with disc-like shells...
Inducible defences are adaptive phenotypes that arise in response to predation threats. Such plasticity incurs costs individuals, but there has been little interest how such induced traits animals may be constrained by environmental factors. Here, we demonstrate calcium availability interacts with cues modify snail shell growth and form. Small snails increased their were heavier when exposed fish chemical cues, this was limited. There also an interactive effect of on the larger snails,...
SUMMARY. The invertebrate colonization of a man‐made stream, Flugströmmen, in southern Sweden was monitored for 18 months 1988 and 1989. Benthic samples were taken on twelve occasions from three sites (upstream, middle downstream) community structure compared with that at ten natural, permanent reference nearby. number species colonizing increased rapidly during the first 3 months. increase most rapid upstream but levelled off second year this site, while numbers continued to downstream....
Summary 1. Cross‐species macroecological comparisons in freshwater invertebrates have been restricted by a lack of large‐scale distributional data, and robust phylogenies. Here, we use data from the OdonataCentral database to explore body length–range size wing relationships damselflies genus Enallagma ; recent publication phylogeny for this group meant that, as well cross‐species analysis, were able assess phylogenetically controlled manner. 2. For comparisons, only length showed...