Mature population dynamics?Consumer–Resource Dynamics by William W. Murdoch, Cheryl J. Briggs, and Roger M. Nisbet. Princeton University Press, Monographs in Population Biology Series, 2003 £52.95 hbk (xiii+459 pages) ISBN 0 691 00657 1

2004 ◽  
Vol 19 (2) ◽  
pp. 66-67 ◽  
Author(s):  
Alan Berryman
Keyword(s):  
Population Dynamics ◽  
Population Biology ◽  
Princeton University ◽  
Resource Dynamics ◽  
Consumer Resource ◽  
Mature Population

scholarly journals POPULATION BIOLOGY OF MUD CRAB Scylla serrata - Forsskal, 1775 IN MANGROVE ECOSYSTEM OF SUBANG DISTRICT, WEST JAVA

2017 ◽  
Vol 9 (1) ◽  
pp. 173
Author(s):  
Ayu Annisa Kumalah ◽  
Yusli Wardiatno ◽  
Isdradjad Setyobudiandi ◽  
Achmad Fahrudin
Keyword(s):  
Population Dynamics ◽  
Size Distribution ◽  
Population Biology ◽  
Stock Assessment ◽  
Mangrove Ecosystem ◽  
Mature Female ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Growth Coefficient ◽  
Exploitation Rate

<p><em>The study </em><em>of population biology </em><em>of mud crab <span style="text-decoration: underline;">Scylla</span> <span style="text-decoration: underline;">serrata</span> is necessary to </em><em>analyse </em><em>the population dynamics, </em><em>such as </em><em>growth of crabs, size distribution, mortality </em><em>and exploitation </em><em>rate</em><em>s</em><em> </em>of<em> </em><em>S. </em><em>s</em><em>errata. </em><em>Population biology </em><em>data collection </em><em>was </em><em>carried out</em><em> from March to June 2016 at</em><em> estuary and </em><em>s</em><em>ilvofishery area</em><em>s of three stations (</em>Mayangan, Tanjung Tiga and Blanakan villages)<em>.</em><em> </em><em>Data  were analyzed </em><em>using </em><em>analytical methods </em><em>of</em><em> FISAT-II (FAO-ICLARM Stock Assessment Toool II)instruments. </em><em>The results showed the growth of S. </em><em>s</em><em>errata male in Subang distric was </em><em>positive </em><em>allometric and the female was negative allometric</em><em>. </em><em>Growth coefficient (K) ranged from 0.21 to 0.43 in the estuary and from 0.28 to 0.89 in silvofishery area.</em><em> Exploitation rate in</em><em> the </em><em>silvofishery </em><em>area </em><em>has been </em><em>above the maximum exploitation rate. The size distribution of S. </em><em>s</em><em>errata in Subang district has the highest frequency </em><em>at</em><em> </em><em>class</em><em> interval</em><em> of</em><em> 106-110 </em><em>mm </em><em>(male) and</em><em> of</em><em> 101-105</em><em> mm</em><em>. </em><em>The highest abundance of mature female crabs is in May.</em><em></em></p><p><strong><em>Keywords</em></strong><em> : </em><em>population </em><em>biology, </em><em><span style="text-decoration: underline;">S</span></em><em><span style="text-decoration: underline;">cylla</span></em><em> <span style="text-decoration: underline;">serrata</span>, Subang District</em></p>

Dynamics of Consumer-Resource Systems

2013 ◽  
Author(s):  
André M. de Roos ◽  
Lennart Persson
Keyword(s):  
Model Organism ◽  
Growth Dynamics ◽  
Population Cycles ◽  
Food Density ◽  
Juvenile Period ◽  
Ecological Processes ◽  
Resource Dynamics ◽  
Cladoceran Zooplankton ◽  
The Individual ◽  
Consumer Resource

This chapter focuses on consumer-resource dynamics in systems where consumers of different sizes compete for a shared resource. It considers the implications of three important aspects of consumer life history: the explicit handling of a juvenile period leading to a delay between the time when an individual is born to when it starts to reproduce; the rate by which individual ecological processes scale with body size; and whether the rate by which the individual grows is dependent on food density or not. The chapter examines the effects of different resource growth dynamics to illustrate the fundamental differences between population cycles driven by interactions between individuals of different sizes, and classical predator–prey cycles driven by interactions between the consumer and the resource, also referred to as paradox of enrichment cycles. It also discusses experiments with the model organism, the cladoceran zooplankton Daphnia, to elucidate our current understanding of cycles driven by cohort interactions in this organism.

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