title: Effects of turbidity and light intensity on foraging success of juvenile mandarin fish Siniperca chuatsi (Basilewsky)

authors: Li, Wei

subjects: foraging success

abstract: This study aimed to evaluate the effects of turbidity and light intensity on foraging success of juvenile mandarin fish Siniperca chuatsi. Predation on crucian carp Carassius auratus by juvenile mandarin fish was tested at five levels of turbidity combined with two light intensities, imitating daylight and night in two turbidity types. Foraging success was significantly lower in clay-induced turbidity than in algal-induced turbidity. In clay-induced turbidity trials, there was a slight but insignificant increase in foraging success of mandarin fish with increasing turbidity under lighted conditions. In algal-induced turbidity trials, there were no significant differences in foraging success of mandarin fish among turbidity levels at both light and dark levels, but at 80 NTU turbidity level, foraging success was lower than in all the other turbidity levels. There was no significant difference in foraging success at different turbidities under darkness. These results suggest that piscivory of mandarin fish is influenced by different turbidity types but is not significantly influenced by increased turbidity combined with decreased light intensity.

text: Effects of turbidity and light intensity on foraging success of juvenile mandarin fish Siniperca chuatsi (Basilewsky) This study aimed to evaluate the effects of turbidity and light intensity on foraging success of juvenile mandarin fish Siniperca chuatsi. Predation on crucian carp Carassius auratus by juvenile mandarin fish was tested at five levels of turbidity combined with two light intensities, imitating daylight and night in two turbidity types. Foraging success was significantly lower in clay-induced turbidity than in algal-induced turbidity. In clay-induced turbidity trials, there was a slight but insignificant increase in foraging success of mandarin fish with increasing turbidity under lighted conditions. In algal-induced turbidity trials, there were no significant differences in foraging success of mandarin fish among turbidity levels at both light and dark levels, but at 80 NTU turbidity level, foraging success was lower than in all the other turbidity levels. There was no significant difference in foraging success at different turbidities under darkness. These results suggest that piscivory of mandarin fish is influenced by different turbidity types but is not significantly influenced by increased turbidity combined with decreased light intensity.

year: 2013

title: Measuring the impact of conservation: The growing importance of monitoring fauna, flora and funga

authors: Stephenson, P.J.

subjects: aquatic species

abstract: Many stakeholders, from governments to civil society to businesses, lack the data they need to make informed decisions on biodiversity, jeopardising efforts to conserve, restore and sustainably manage nature. Here we review the importance of enhancing biodiversity monitoring, assess the challenges involved and identify potential solutions. Capacity for biodiversity monitoring needs to be enhanced urgently, especially in poorer, high-biodiversity countries where data gaps are disproportionately high. Modern tools and technologies, including remote sensing, bioacoustics and environmental DNA, should be used at larger scales to fill taxonomic and geographic data gaps, especially in the tropics, in marine and freshwater biomes, and for plants, fungi and invertebrates. Stakeholders need to follow best monitoring practices, adopting appropriate indicators and using counterfactual approaches to measure and attribute outcomes and impacts. Data should be made openly and freely available. Companies need to invest in collecting the data required to enhance sustainability in their operations and supply chains. With governments soon to commit to the post-2020 global biodiversity framework, the time is right to make a concerted push on monitoring. However, action at scale is needed now if we are to enhance results-based management adequately to conserve the biodiversity and ecosystem services we all depend on.

text: Measuring the impact of conservation: The growing importance of monitoring fauna, flora and funga Many stakeholders, from governments to civil society to businesses, lack the data they need to make informed decisions on biodiversity, jeopardising efforts to conserve, restore and sustainably manage nature. Here we review the importance of enhancing biodiversity monitoring, assess the challenges involved and identify potential solutions. Capacity for biodiversity monitoring needs to be enhanced urgently, especially in poorer, high-biodiversity countries where data gaps are disproportionately high. Modern tools and technologies, including remote sensing, bioacoustics and environmental DNA, should be used at larger scales to fill taxonomic and geographic data gaps, especially in the tropics, in marine and freshwater biomes, and for plants, fungi and invertebrates. Stakeholders need to follow best monitoring practices, adopting appropriate indicators and using counterfactual approaches to measure and attribute outcomes and impacts. Data should be made openly and freely available. Companies need to invest in collecting the data required to enhance sustainability in their operations and supply chains. With governments soon to commit to the post-2020 global biodiversity framework, the time is right to make a concerted push on monitoring. However, action at scale is needed now if we are to enhance results-based management adequately to conserve the biodiversity and ecosystem services we all depend on.

year: 2022

title: District plan implementation under the RMA: Confessions of a resource consent

authors: Day, Maxine

subjects: New Zealand

abstract: This report focuses on results from Phase 2 of PUCM - the quality of plan
implementation in six district councils selected for their range of plan quality and
capacity to plan. Only those results considered to be important for assisting the six
councils (and others) to improve implementation of their plans are included in this
report. The findings and recommendations, both specific and general, ought to be
instructive for other councils, thereby helping to improve their plans and
implementation processes. Since hapu/iwi interests formed a key component of the
research, the outcomes will help enhance their case for better consideration of their
interests when dealing with local government. As well, many of the findings and
recommendations relate to matters of governance and capacity building that require
Government action, which until done will make it difficult for councils to achieve
quality plans and implementation processes.

text: District plan implementation under the RMA: Confessions of a resource consent This report focuses on results from Phase 2 of PUCM - the quality of plan
implementation in six district councils selected for their range of plan quality and
capacity to plan. Only those results considered to be important for assisting the six
councils (and others) to improve implementation of their plans are included in this
report. The findings and recommendations, both specific and general, ought to be
instructive for other councils, thereby helping to improve their plans and
implementation processes. Since hapu/iwi interests formed a key component of the
research, the outcomes will help enhance their case for better consideration of their
interests when dealing with local government. As well, many of the findings and
recommendations relate to matters of governance and capacity building that require
Government action, which until done will make it difficult for councils to achieve
quality plans and implementation processes.

year: 2003-04-15