A5039847249- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Fish Ecology and Management Studies
- Isotope Analysis in Ecology
- Aquatic Invertebrate Ecology and Behavior
- Forest Insect Ecology and Management
- Soil and Water Nutrient Dynamics
- Hydrology and Sediment Transport Processes
- Freshwater macroinvertebrate diversity and ecology
- Animal Ecology and Behavior Studies
- Oceanographic and Atmospheric Processes
- Climate variability and models
- Marine and coastal plant biology
- Ecology and Vegetation Dynamics Studies
- Coral and Marine Ecosystems Studies
- Soil erosion and sediment transport
- Spectroscopy and Quantum Chemical Studies
- Lepidoptera: Biology and Taxonomy
- Ocean Acidification Effects and Responses
- Entomological Studies and Ecology
- Environmental Toxicology and Ecotoxicology
- Aquaculture Nutrition and Growth
- Atmospheric chemistry and aerosols
National Institute of Water and Atmospheric Research
2003-2023
Plymouth Marine Laboratory
1998
University of Strathclyde
1995
1. We formulate a simple, physiologically based model to investigate the phenomenon of compensatory growth. 2. The is upon two key assumptions. First, that an individual partitions net assimilate between tissue types: those which can and cannot be remobilized once laid down. Second, modulates its behaviour physiology in response instantaneous ratio mobilizable non-mobilizable tissues. 3. parameterized for salmonids from published studies their energetics. Data aquaculture fish growth under...
We assembled water-temperature data (1.0–15 m depth horizon) from several field studies (spanning 2003–2020) within Pelorus Sound to generate composite time-series of temperature at four locations. also examined satellite-sensed sea-surface records for the region (2002–2019). Time-series were deseasoned and Sen-slopes calculated as measures long-term trend. All in-situ slopes most satellite fell inside range 0.2–0.4°C decade−1. Within data, warming appears have been less rapid during spring...
A computer model for epilithic algae and grazer biomass in streams is modified to better predict the effects of temperature calibrated diatoms mayflies. Mayflies are predicted maintain low diatom provided that (1) temperatures remain within their preferred range (10–20°C); (2) mayfly populations not adversely affected by floods. Algal blooms occur mayfly-dominated above 20°C—temperatures common pasture over summer. We hypothesize mobile bed susceptible during summer flows following floods...
The dispersal and transport of larval New Zealand abalone Haliotis iris was simulated using coupled two-dimensional hydrodynamic Lagrangian particle-trajectory models. aim to estimate pelagic potential along the open coast, as a starting point from which basic management questions can be made for this recreationally commercially important species. Larval representative spawning sites under range conditions, including wave-induced circulation cells. presence over near-shore reef habitat...
With climate heating, Aotearoa New Zealand is expected to experience more marine heatwaves (MHW) in the coming decades. These extreme events are already impacting island nation's and coastal environments industries at a variety of scales. There will potentially be substantial benefits developing an early warning system–specifically ocean seasonal forecast tools. This near-term 2,030 horizon scan reviews studies supporting development this capability notes work needed enable stakeholders...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 118:103-120 (1995) - doi:10.3354/meps118103 Patterns of abundance for Calanus and smaller copepods in North Sea: time series decomposition two CPR data sets Broekhuizen, N., McKenzie, E. We present a analysis 34 yr continuous plankton recorder (CPR) 2 taxa: 'total small copepods' copepodite stages 5 6 Sea....
Landuse change alters the quantity and supply of stream energy resources from allochthonous (catchment-derived) to autochthonous (stream-derived) sources. This alteration has prompted need for better understanding C N pathways through food webs. We added stable 15N-NH4 13C-acetate isotopes as tracers experimental channels containing 1 4 key basal resources: autotrophic epilithon, heterotrophic fine particulate organic matter (FPOM), coarse (CPOM). Our goal was evaluate importance these foods...
Finfish aquaculture is playing an increasing role in global food provision, with accompanying increases benthic impacts under intensive pen production systems. Deposited faeces and near fish pens affect the seafloor environment biogeochemical functioning. To maintain healthy coastal environments, many farms operate by alternating input fallowing periods to allow receiving environments recover from excess organic matter inputs. Here, we used flow-through annular flume mesocosms simulate...
We present a particle tracking model that simulates the dispersal of oyster Ostrea chilensis Philippi in Tasman Bay, New Zealand. The was calibrated to reproduce observed vertical distributions larvae, and verified against an independent data set such distributions. seabed Bay contains little hard substrate other than shell hash. By comparing simulated settlement, we infer larvae must either be able sense hash at distance orient onto it, settlement success is higher indicated by 1-km2...
Building accurate physical-biogeochemical models of processes driving climate and eutrophication-related stressors in coastal waters is an essential step managing the impacts these stressors. Here we develop a coupled model to investigate present day for key marine ecosystem Aotearoa, New Zealand: The Hauraki Gulf/Firth Thames system. Simulation results compared well with accompanying long-term (decadal) observational dataset, indicating that captured most physical biological dynamics This...
Data from 27 populations of Bupalus piniaria L. (Lepidoptera, Geometridae) spanning a minimum 22 years are used to estimate the parameters simple difference model moth's population dynamics. The resulting parameter estimates compared with «site characteristics» forest in which each exists. per capita net rate increase is found be positively correlated latitude, while shape function describing immediately density-dependent mortality inversely related local rainfall. Possible physiological and...
This study develops a novel approach to forecasting anomalies of meat yield from mussel aquaculture in Pelorus Sound, New Zealand, based on the relationships between non-local sea surface temperature (SST) and observations over 13 years. Overall, we found strong associations lagged SSTs Tasman Sea region yield, with noticeable seasonal cycle these relationships. Results also showed that oceanic variables such as SST correlate more strongly than atmospheric variables, wind other indices flow....
Census data from an outbreaking population of the pine looper moth, Bupalus piniaria L. (Lepidoptera: Geometridae) are used to derive a life-table for population. A comparative analysis is made this with one published non-outbreaking moth. The stage-specific survival rates found exhibit qualitatively similar patterns, though absolute differ substantially in some cases. There evidence operation density-dependent processes at several points moth's life-cycle. results experimental studies...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 252:61-76 (2003) - doi:10.3354/meps252061 Sub-grid-scale differences between individuals influence simulated phytoplankton production and biomass in a shelf-sea system Niall Broekhuizen1,*, John Oldman1, Zeldis2 1National Institute of Water & Atmospheric Research Ltd., PO Box 11-115, Gate 10, Silverdale Road,...
Summary A spatially explicit, individual‐based population model (IBPM) for southern Buller's albatross Thalassarche bulleri was developed to simulate the species’ at‐sea distribution and interactions with fishing fleets. Satellite tracking data birds from colonies on Snares Islands Solander Island (south of South Island, New Zealand) suggest that feeding grounds utilized by a bird, duration its foraging trips, are dependent upon colony, sex, pairing status developmental stage egg/chick....