Knowledge (XXG)

Depensation

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1896: 33: 145:) whereby, due to certain causes, a decrease in the breeding population (mature individuals) leads to reduced production and survival of eggs or offspring. The causes may include predation levels rising per offspring (given the same level of overall predator pressure) and the 161:. This occurs when the population size has a tendency to decline when the population drops below a certain level (known as the "Critical depensation level"). Ultimately this may lead to the population or fishery's collapse ( 1091: 344: 1235: 180:, which describes a situation where a decline in population biomass is not compensated by a corresponding increase in marginal growth per unit of biomass. 1305: 842: 1937: 1315: 1043: 1320: 877: 1508: 925: 1261: 1084: 337: 597: 274: 241:
Maroto, Jose M.; Moran, Manuel. "Detecting the presence of depensation in collapsed fisheries: The case of the Northern cod stock".
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When the level of depensation is high enough that the population is no longer able to sustain itself, it is said to be a
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Kar, Tapan Kumar; Misra, Swarnakamal. "Optimal Control of a Fishery under Critical Depensation".
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The phenomenon of critical depensation may be modelled or defined by a negative second order
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Optimal harvesting in the presence of critical depensation
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of population growth rate with respect of population
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You can help Knowledge (XXG) by 1262:Ecological effects of biodiversity 25: 598:Generalist and specialist species 263:Quinn, Terrance (25 March 1999). 1894: 1321:Occupancy–abundance relationship 31: 1341:Relative abundance distribution 1054:Plant defense against herbivory 921:Competitive exclusion principle 633:Mesopredator release hypothesis 42:needs additional citations for 926:Consumer–resource interactions 1: 1772:Biological data visualization 1599:Environmental niche modelling 1326:Population viability analysis 1257:Density-dependent inhibition 1726:Liebig's law of the minimum 1561:Resource selection function 452:Metabolic theory of ecology 1988: 1889: 1626:Niche apportionment models 1346:Relative species abundance 550:Primary nutritional groups 447:List of feeding behaviours 266:Quantitative Fish Dynamics 1875: 1807:Ecosystem based fisheries 1419:Interspecific competition 1311:Minimum viable population 1169:Maximum sustainable yield 1154:Intraspecific competition 1149:Effective 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158: 156: 147:Allee effect 134: 128: 113: 104: 94: 87: 80: 73: 61: 49:Please help 44:verification 41: 1484:Disturbance 1387:interaction 1209:Recruitment 1139:Depensation 931:Copiotrophs 802:Energy flow 724:Lithotrophy 668:Decomposers 648:Planktivore 623:Insectivore 613:Heterotroph 578:Bacterivore 545:Phototrophs 495:Chemotrophs 467:Restoration 417:Competition 211:Overfishing 165:), or even 141:(such as a 135:depensation 1957:Extinction 1951:Categories 1852:Sexecology 1429:Parasitism 1394:Antibiosis 1229:Resistance 1224:Resilience 1114:Population 1034:Camouflage 986:Oligotroph 901:Ascendency 863:intertidal 853:cold seeps 807:Food chain 608:Herbivores 583:Carnivores 510:Mixotrophs 485:Autotrophs 364:components 228:References 174:derivative 143:fish stock 139:population 77:newspapers 1757:Allometry 1711:Emergence 1439:Symbiosis 1424:Mutualism 1219:Stability 1124:Abundance 936:Dominance 894:Processes 883:tide pool 779:Food webs 653:Predation 638:Omnivores 565:Consumers 520:Mycotroph 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Index

Critical depensation

verification
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"Depensation"
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JSTOR
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population dynamics
population
fish stock
Allee effect
resource depletion
local extinction
derivative
biomass
Abundance (ecology)
Conservation biology
Local extinction
Overexploitation
Overfishing
Small population size
Threatened species


Quantitative Fish Dynamics

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