the Report
... dozen species of marine mammals, including the massive blue whale and playful sea otters; nearly 100 species of seabirds such as brown pelicans and common murres; 345 species of fish; 4 species of threatened or endangered sea turtles; as well as hundreds of species of large marine algae such as kelp. ...
... dozen species of marine mammals, including the massive blue whale and playful sea otters; nearly 100 species of seabirds such as brown pelicans and common murres; 345 species of fish; 4 species of threatened or endangered sea turtles; as well as hundreds of species of large marine algae such as kelp. ...
PDF
... Distributions for the growth rates, weather and the correlation between the species were obtained from the estimation and data. The distribution for the weather term is derived from the observations of monthly rainfall at Nelson Bay from January 1882 to March 2005. Rainfall was found to be distribut ...
... Distributions for the growth rates, weather and the correlation between the species were obtained from the estimation and data. The distribution for the weather term is derived from the observations of monthly rainfall at Nelson Bay from January 1882 to March 2005. Rainfall was found to be distribut ...
AP Biology Reading Guide Chapter 50 An Introduction to
... 13. You may recall from Chapter 54 that biomass is the total mass of all individuals in a trophic level. Another way of defining net primary production is as the amount of new biomass added in a given period of time. Why is net primary production, or the amount of new biomass/unit of time, the key m ...
... 13. You may recall from Chapter 54 that biomass is the total mass of all individuals in a trophic level. Another way of defining net primary production is as the amount of new biomass added in a given period of time. Why is net primary production, or the amount of new biomass/unit of time, the key m ...
best available scientific information does not support an expansion
... uninhabited or lightly inhabited islands similar to the PRIA that can be used as examples of undisturbed reefs. The Pacific Islands need examples of well managed reef ecosystems in urban areas, since people are a major reef stressor. As such, the populated islands of Hawaii, American Samoa and Maria ...
... uninhabited or lightly inhabited islands similar to the PRIA that can be used as examples of undisturbed reefs. The Pacific Islands need examples of well managed reef ecosystems in urban areas, since people are a major reef stressor. As such, the populated islands of Hawaii, American Samoa and Maria ...
conservation and biodiversity notes
... that ever lived are now extinct • Background rate of extinction = natural extinctions for a variety of reasons – 1 extinction per 1 to 10 million species for mammals and marine species – 1 species out of 1,000 mammal and marine species would go extinct every 1,000 to 10,000 years ...
... that ever lived are now extinct • Background rate of extinction = natural extinctions for a variety of reasons – 1 extinction per 1 to 10 million species for mammals and marine species – 1 species out of 1,000 mammal and marine species would go extinct every 1,000 to 10,000 years ...
Bio 4.2
... Defining the Niche An organism’s niche describes not only the environment where it lives, but how it interacts with biotic and abiotic factors in the environment. ...
... Defining the Niche An organism’s niche describes not only the environment where it lives, but how it interacts with biotic and abiotic factors in the environment. ...
Behavioral ecology and evolution
... • Females allowed into site only to spawn, then males guard eggs until they hatch into plankton • intraspecific and interspecific defense (including humans!) • territorial defense may have evolved to increase reproductive success ...
... • Females allowed into site only to spawn, then males guard eggs until they hatch into plankton • intraspecific and interspecific defense (including humans!) • territorial defense may have evolved to increase reproductive success ...
Pikeminnow, Ptychocheilus lucius, is a torpedo
... Juan Rivers. The pikeminnows were the top predators in the big western rivers. They are referred to as piscivorous, for they prey on all fish smaller than themselves. But historical accounts suggest that they would also take small mammals swimming in the rivers, for early fishermen used mice and eve ...
... Juan Rivers. The pikeminnows were the top predators in the big western rivers. They are referred to as piscivorous, for they prey on all fish smaller than themselves. But historical accounts suggest that they would also take small mammals swimming in the rivers, for early fishermen used mice and eve ...
Maintaining Self-Sustaining Bluegill
... aquaculture production. Swingle (1950) reported an average fish yield of 364 kg/ha recovered from 29 drained ponds that contained balanced bluegill and largemouth bass populations. Where feasible, the addition of agricultural limestone, fertilizer, supplemental feeding and aeration may increase fish ...
... aquaculture production. Swingle (1950) reported an average fish yield of 364 kg/ha recovered from 29 drained ponds that contained balanced bluegill and largemouth bass populations. Where feasible, the addition of agricultural limestone, fertilizer, supplemental feeding and aeration may increase fish ...
Niche and fitness differences relate the maintenance of diversity to
... dominance cause the observed correlations between diversity and biomass, many researchers rely on ‘‘additive partitions’’ of biomass data, but even the authors of these methods are cautious about using them to infer the strength of particular biological mechanisms (Fox 2005, Hector et al. 2009). Div ...
... dominance cause the observed correlations between diversity and biomass, many researchers rely on ‘‘additive partitions’’ of biomass data, but even the authors of these methods are cautious about using them to infer the strength of particular biological mechanisms (Fox 2005, Hector et al. 2009). Div ...
Sustainable Fishing - California Academy of Sciences
... impact on the environment.* [Clarification Statement: Examples of the design process MS-ESS3-3. include examining human environmental impacts, assessing the kinds of solutions that are feasible, and designing and evaluating solutions that could reduce that impact.] http://www.nextgenscience.org/mses ...
... impact on the environment.* [Clarification Statement: Examples of the design process MS-ESS3-3. include examining human environmental impacts, assessing the kinds of solutions that are feasible, and designing and evaluating solutions that could reduce that impact.] http://www.nextgenscience.org/mses ...
Bio213exam3studyguideSp14
... notes, and the learning objectives of each chapter. Start with the biggest concepts and ideas first (e.g. biogeochemical cycles, food chains & webs, etc.), then fill in details about each. Review vocabulary words (in bold print). As you review, see where one topic connects to another, and actually f ...
... notes, and the learning objectives of each chapter. Start with the biggest concepts and ideas first (e.g. biogeochemical cycles, food chains & webs, etc.), then fill in details about each. Review vocabulary words (in bold print). As you review, see where one topic connects to another, and actually f ...
Biodiversity is everyone`s business
... Biological diversity, or biodiversity is the variety of all living organisms, including all species. It can be defined as ‘the variety of life forms, the different plants, animals and micro-organisms, the genes they contain, and the ecosystems they form’. The concept emphasises the dynamic interrela ...
... Biological diversity, or biodiversity is the variety of all living organisms, including all species. It can be defined as ‘the variety of life forms, the different plants, animals and micro-organisms, the genes they contain, and the ecosystems they form’. The concept emphasises the dynamic interrela ...
Sustainable Aquaculture Workshop
... Need of Comprehensive environmental analysis Solution: Use/supplement with artificial feed in autum and winter ...
... Need of Comprehensive environmental analysis Solution: Use/supplement with artificial feed in autum and winter ...
WLE 340 – Kenduskeag Stream Smallmouth Bass Project – Lab I
... scrape algae and moss from the tops of rocks. Predatory insects such as dragonflies, hellgrammites, and some large stoneflies feed directly upon the shredders, collectorgatherers, collector-filterers, and grazers. As bits of the microbe-plant material are processed, they and their insect processors ...
... scrape algae and moss from the tops of rocks. Predatory insects such as dragonflies, hellgrammites, and some large stoneflies feed directly upon the shredders, collectorgatherers, collector-filterers, and grazers. As bits of the microbe-plant material are processed, they and their insect processors ...
ecological principles for managing land use
... production and decomposition, are limited by soil nutrients, temperature, water availability, and the temporal pattern of these factors controlled by climate and weather. Thus, only certain ranges of ecological-process rates can persist in a locale without continued management inputs (e.g., irrigati ...
... production and decomposition, are limited by soil nutrients, temperature, water availability, and the temporal pattern of these factors controlled by climate and weather. Thus, only certain ranges of ecological-process rates can persist in a locale without continued management inputs (e.g., irrigati ...
Clupea harengus
... The autumn-spawning Baltic herring was considered threatened in HELCOM (2007) possibly due to fisheries. The decline of the autumn-spawning Baltic herring occurred during the 1940s and 1950s at a time when fishing induced mortality was low compared to the situation today. Hence, the main reason for ...
... The autumn-spawning Baltic herring was considered threatened in HELCOM (2007) possibly due to fisheries. The decline of the autumn-spawning Baltic herring occurred during the 1940s and 1950s at a time when fishing induced mortality was low compared to the situation today. Hence, the main reason for ...
Redwoods—Responsibilities for a Long
... redwoods running from Monterey to Del Norte Counties in Northern California. Fossil evidence indicates that redwoods have been around for at least 130 million years and once had a distribution across much of the Northern Hemisphere. The historic redwood range was reduced through natural causes such ...
... redwoods running from Monterey to Del Norte Counties in Northern California. Fossil evidence indicates that redwoods have been around for at least 130 million years and once had a distribution across much of the Northern Hemisphere. The historic redwood range was reduced through natural causes such ...
Chapter 15 Biodiversity and Conservation Biology
... Top predators play key roles in their ecosystems Removing a species that can be replaced by others may make little difference, but removing a keystone species can significantly change an ecological system. Removing a single individual at the top or a food chain can have impacts that multiply as they ...
... Top predators play key roles in their ecosystems Removing a species that can be replaced by others may make little difference, but removing a keystone species can significantly change an ecological system. Removing a single individual at the top or a food chain can have impacts that multiply as they ...
Slide 1 - Wildlife Ecology and Conservation
... Habitat destruction Overexploitation Threatened eradication from disease or predation Inadequate regulations for protection Other factors affecting its continued existence ...
... Habitat destruction Overexploitation Threatened eradication from disease or predation Inadequate regulations for protection Other factors affecting its continued existence ...
English version
... initiatives in research, species and ecosystem management and education. The T&T Field Naturalists’ Club has a long tradition of scientific research on the biota of T&T, and has contributed significantly to the knowledge base. Several organizations have contributed knowledge regarding their specific ...
... initiatives in research, species and ecosystem management and education. The T&T Field Naturalists’ Club has a long tradition of scientific research on the biota of T&T, and has contributed significantly to the knowledge base. Several organizations have contributed knowledge regarding their specific ...
Review Article The Fluctuation Niche in Plants - CREAF
... we suggest that the competition outcome in many cases would not depend on the average availabilities of an essential resource, but on the patterns of time-space fluctuations of that availability. Obviously, the variation range will become determinant only if it is larger than some threshold value, d ...
... we suggest that the competition outcome in many cases would not depend on the average availabilities of an essential resource, but on the patterns of time-space fluctuations of that availability. Obviously, the variation range will become determinant only if it is larger than some threshold value, d ...
Ecology and Interactionswoyce
... How? Don’t prey populations produce new organisms as others die? If the death rate exceeds the birth rate…. Populations go down. What happens if a predator is suddenly removed from a habitat? ...
... How? Don’t prey populations produce new organisms as others die? If the death rate exceeds the birth rate…. Populations go down. What happens if a predator is suddenly removed from a habitat? ...
Forage Panel/Council – TQ Set 1 - Mid
... 3. What is the range of exploitation rates the Council should consider for forage species? 4. What trade-offs (biological, economic, etc.) would the Council face if it adopts exploitation policies or control rules for forage species to preserve or enhance ecosystem structure and function? 5. How hav ...
... 3. What is the range of exploitation rates the Council should consider for forage species? 4. What trade-offs (biological, economic, etc.) would the Council face if it adopts exploitation policies or control rules for forage species to preserve or enhance ecosystem structure and function? 5. How hav ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.