Browsing Biology by Title
Now showing items 220-228 of 228
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Variation in egg spawning among subpopulations of sea urchins Strongylocentrotus droebachiensis: a theoretical approach
(2001)Variation in zygote production, by determining the initial size of the larvalpool, can aff ect the population dynamics of marine invertebrates with a planktonic larval stage. In this paper, we model temporal and spatial ... -
Variation in milk production and lactation performance in grey seals and consequences for pup growth and weaning characteristics
(1999-12)Phocid seals are one of the few groups of mammals capable of sustaining the energetic demands of lactation entirely through body nutrient stores while fasting. Lactation performance of the female in turn influences the ... -
Variations in Sampling Procedure and Frequency Affect Estimates of Recruitment of Barnacles
(1993-09)The influence of variations in sampling procedure and frequency on estimates of recruitment of the barnacle Semibalanus balanoides (L.) on an intertidal rocky shore at Sandy Cove, Nova Scotia, Canada was determined from ... -
Water quality measurements on Williams Lake and Colpitt Lake (Halifax, N.S.) Dec 7-13, 2015 with reference to possible impacts of road salt
(Williams Lake Conservation Company, 2016-01-06)Concerns have been expressed by the Williams Lake Conservation Company (WLCC) about possible effects of renewed salting of roads close to Williams Lake on water quality of the lake. Such salting was replaced by sand and ... -
Weaning mass affects changes in body composition and food intake in harbour seal pups during the first month of independence
(2003-05)In phocid seals, the transition to nutritional independence is abrupt, with females abandoning their offspring after weaning and returning to sea. We hypothesized that body size at weaning may play an important role in ... -
What is a fish stock assessment? Is it a sound method? Can it be used to manage a commercial fishery?
(2015-09)Under Karl Popper's non-inductive theory of method arguments are never carried from data to advice as in a fish stock assessment. That is: a distinction or 'demarcation' has to be made between (i) a Lamarckian-like inductive ... -
Why an ecosystem approach is the wrong paradigm for the next stage of fisheries management
(2006-09-13)Scientists from the Department of Fisheries and Oceans (DFO) manage groundfish stocks by collecting biomass measurements that are used to provide scientific advice on catch limits. Clearly, if the data is uncertain or ... -
Why do fish stocks collapse? The example of cod in Atlantic Canada
(1997-02)In 1993, six Canadian populations of Atlantic cod (Gadus morhua) had collapsed to the point where a moratorium was declared on fishing. It has been argued that the collapses were caused by poor recruitment of cod to the ...