Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estu... more Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estuary monitoring data (2001 to 2016) largely acquired from councils and unitary authorities (councils) around New Zealand. The dataset comprises fine-scale intertidal benthic ecological data collected using the Estuary Monitoring Protocol (EMP: Robertson et al. 2002), or similar, survey methodologies. This is in the form of macrofaunal abundance data and corresponding physico-chemical sediment data, as well as associated metadata. The dataset was compiled to facilitate national-scale research within the MBIE-funded Oranga Taiao, Oranga Tangata (OTOT) programme, led by Murray Patterson from Massey University. For further details on the dataset please refer to the National Estuary User Manual, which is included as a reference in the FigShare data repository. Use of the dataset is entirely at the risk of the recipient and we accept no responsibility for any inaccuracies that may be present.&l...
Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estu... more Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estuary monitoring data (2001 to 2016) largely acquired from councils and unitary authorities (councils) around New Zealand. The dataset comprises fine-scale intertidal benthic ecological data collected using the Estuary Monitoring Protocol (EMP: Robertson et al. 2002), or similar, survey methodologies. This is in the form of macrofaunal abundance data and corresponding physico-chemical sediment data, as well as associated metadata. The dataset was compiled to facilitate national-scale research within the MBIE-funded Oranga Taiao, Oranga Tangata (OTOT) programme, led by Murray Patterson from Massey University. For further details on the dataset please refer to the National Estuary Dataset User Manual, which is included as a reference in the FigShare data repository. Use of the dataset is entirely at the risk of the recipient and we accept no responsibility for any inaccuracies that may be pr...
Incorporating a model metabolism in an artificial organism gives it the potential to develop beha... more Incorporating a model metabolism in an artificial organism gives it the potential to develop behaviour which is lifelike, interesting and entertaining to interact with. The physiological component of such a metabolism provides behavioural requirements and limitations that reflect those imposed on real-life organisms, and the psychological component provides motivation for apparently sensible actions. As an interface between an organism’s actions and its brain, a metabolism supports the learning processes of the organism, and as a reflection of the success of an organism’s behaviour patterns, the physiological metabolic state provides a good basis for the assessment of reproductive fitness.
Understanding of colony specific properties of cyanobacteria in the natural environment has been ... more Understanding of colony specific properties of cyanobacteria in the natural environment has been challenging because sampling methods disaggregate colonies and there are often delays before they can be isolated and preserved. Microcystis is a ubiquitous cyanobacteria that forms large colonies in situ and often produces microcystins, a potent hepatotoxin. In the present study a new cryo-sampling technique was used to collect intact Microcystis colonies in situ by embedding them in a sheet of ice. Thirty-two of these Microcystis colonies were investigated with image analysis, liquid chromatography-mass spectrometry, quantitative polymerase chain reaction and high-throughput sequencing to assess their volume, microcystin quota and internal transcribed spacer (ITS) genotype diversity. Microcystin quotas were positively correlated to colony volume (R2 = 0.32; p = 0.004). Individual colonies had low Microcystis ITS genotype diversity and one ITS operational taxonomic unit predominated in ...
Transactions of the American Fisheries Society, 2016
AbstractWe compared a process-based invertebrate drift and drift-feeding net rate of energy intak... more AbstractWe compared a process-based invertebrate drift and drift-feeding net rate of energy intake (NREI) model and a traditional hydraulic-habitat model (using the RHYHABSIM [River Hydraulics and Habitat Simulation] software program) for predicting the flow requirements of 52-cm Brown Trout Salmo trutta in a New Zealand river. Brown Trout abundance predicted by the NREI model for the constant drift concentration–flow scenarios were asymptotic or linear, depending on drift concentration, increasing through the mean annual low flow (MALF; 17 m3/s). However, drift concentration increased with flow, consistent with passive entrainment. The predicted fish abundance–flow relationship based on flow-varying drift concentration increased logistically, and more steeply, with flow through the MALF and beyond. Predictions for the relationship between weighted useable area (WUA) and flow were made for three sets of drift-feeding habitat suitability criteria (HSC) developed on three midsized and one large New Zealand ...
Canadian Journal of Fisheries and Aquatic Sciences, 2018
Understanding what drives variation in fish abundance at reference sites provides perspective for... more Understanding what drives variation in fish abundance at reference sites provides perspective for assessing the effects of human alterations to river flow and land use. We examined temporal variation in fish community abundance in a headwater tributary of a large river in the upper South Island (New Zealand) over 10 years. We were interested in the influence of natural flow variation and temperature on native fish abundance within the context of potential competition/predation pressure from juvenile introduced trout. Results from biannual sampling highlighted the dominating influence of floods on fish population dynamics, overriding biotic effects. We found no evidence for adverse effects of trout on native fish, and flow-related habitat performed more poorly in explaining variation in fish abundance than low- and median-flow statistics. Differences in temporal variation in abundance between species were largely consistent with life histories that provide resistance and (or) resilie...
Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estu... more Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estuary monitoring data (2001 to 2016) largely acquired from councils and unitary authorities (councils) around New Zealand. The dataset comprises fine-scale intertidal benthic ecological data collected using the Estuary Monitoring Protocol (EMP: Robertson et al. 2002), or similar, survey methodologies. This is in the form of macrofaunal abundance data and corresponding physico-chemical sediment data, as well as associated metadata. The dataset was compiled to facilitate national-scale research within the MBIE-funded Oranga Taiao, Oranga Tangata (OTOT) programme, led by Murray Patterson from Massey University. For further details on the dataset please refer to the National Estuary User Manual, which is included as a reference in the FigShare data repository. Use of the dataset is entirely at the risk of the recipient and we accept no responsibility for any inaccuracies that may be present.&l...
Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estu... more Cawthron Institute (Cawthron) has recently compiled a national dataset containing ecological estuary monitoring data (2001 to 2016) largely acquired from councils and unitary authorities (councils) around New Zealand. The dataset comprises fine-scale intertidal benthic ecological data collected using the Estuary Monitoring Protocol (EMP: Robertson et al. 2002), or similar, survey methodologies. This is in the form of macrofaunal abundance data and corresponding physico-chemical sediment data, as well as associated metadata. The dataset was compiled to facilitate national-scale research within the MBIE-funded Oranga Taiao, Oranga Tangata (OTOT) programme, led by Murray Patterson from Massey University. For further details on the dataset please refer to the National Estuary Dataset User Manual, which is included as a reference in the FigShare data repository. Use of the dataset is entirely at the risk of the recipient and we accept no responsibility for any inaccuracies that may be pr...
Incorporating a model metabolism in an artificial organism gives it the potential to develop beha... more Incorporating a model metabolism in an artificial organism gives it the potential to develop behaviour which is lifelike, interesting and entertaining to interact with. The physiological component of such a metabolism provides behavioural requirements and limitations that reflect those imposed on real-life organisms, and the psychological component provides motivation for apparently sensible actions. As an interface between an organism’s actions and its brain, a metabolism supports the learning processes of the organism, and as a reflection of the success of an organism’s behaviour patterns, the physiological metabolic state provides a good basis for the assessment of reproductive fitness.
Understanding of colony specific properties of cyanobacteria in the natural environment has been ... more Understanding of colony specific properties of cyanobacteria in the natural environment has been challenging because sampling methods disaggregate colonies and there are often delays before they can be isolated and preserved. Microcystis is a ubiquitous cyanobacteria that forms large colonies in situ and often produces microcystins, a potent hepatotoxin. In the present study a new cryo-sampling technique was used to collect intact Microcystis colonies in situ by embedding them in a sheet of ice. Thirty-two of these Microcystis colonies were investigated with image analysis, liquid chromatography-mass spectrometry, quantitative polymerase chain reaction and high-throughput sequencing to assess their volume, microcystin quota and internal transcribed spacer (ITS) genotype diversity. Microcystin quotas were positively correlated to colony volume (R2 = 0.32; p = 0.004). Individual colonies had low Microcystis ITS genotype diversity and one ITS operational taxonomic unit predominated in ...
Transactions of the American Fisheries Society, 2016
AbstractWe compared a process-based invertebrate drift and drift-feeding net rate of energy intak... more AbstractWe compared a process-based invertebrate drift and drift-feeding net rate of energy intake (NREI) model and a traditional hydraulic-habitat model (using the RHYHABSIM [River Hydraulics and Habitat Simulation] software program) for predicting the flow requirements of 52-cm Brown Trout Salmo trutta in a New Zealand river. Brown Trout abundance predicted by the NREI model for the constant drift concentration–flow scenarios were asymptotic or linear, depending on drift concentration, increasing through the mean annual low flow (MALF; 17 m3/s). However, drift concentration increased with flow, consistent with passive entrainment. The predicted fish abundance–flow relationship based on flow-varying drift concentration increased logistically, and more steeply, with flow through the MALF and beyond. Predictions for the relationship between weighted useable area (WUA) and flow were made for three sets of drift-feeding habitat suitability criteria (HSC) developed on three midsized and one large New Zealand ...
Canadian Journal of Fisheries and Aquatic Sciences, 2018
Understanding what drives variation in fish abundance at reference sites provides perspective for... more Understanding what drives variation in fish abundance at reference sites provides perspective for assessing the effects of human alterations to river flow and land use. We examined temporal variation in fish community abundance in a headwater tributary of a large river in the upper South Island (New Zealand) over 10 years. We were interested in the influence of natural flow variation and temperature on native fish abundance within the context of potential competition/predation pressure from juvenile introduced trout. Results from biannual sampling highlighted the dominating influence of floods on fish population dynamics, overriding biotic effects. We found no evidence for adverse effects of trout on native fish, and flow-related habitat performed more poorly in explaining variation in fish abundance than low- and median-flow statistics. Differences in temporal variation in abundance between species were largely consistent with life histories that provide resistance and (or) resilie...
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Papers by Eric Goodwin