{"product_id":"populations-in-a-seasonal-environment-monographs-in-population-biology-5-9780691081069","title":"Populations in a Seasonal Environment (Monographs in Population Biology  5)","description":"\u003cp\u003eMost organisms live in a seasonal environment. During their life cycles  some species face seasons of cold and heat  aridity and abundant rainfall  migration and stable residence  breeding and nonbreeding. Populations grow and decline as supplies of materials essential to their survival wax and wane. Such qualitative truths as these flow obviously from field observations.  In this original monograph  Stephen Fretwell analyzes the highly complex interaction between a population and a regularly varying environment in an attempt to define and measure seasonality as a critical parameter in the general theory of population regulation. Concerned primarily with the size and the habitat distribution of populations  Professor Fretwell develops simple models that  when applied to specific populations  usually of birds  demonstrate the effect of seasonal variations on the regulation of populations. He maintains that seasonality  as a concept  is essential to a full understanding of environmental interaction. During the course of his exposition  the author offers several new hypotheses  including theories affecting the breeding  numbers  distribution  and diversity of wintering birds  and a theory affecting the body size of sparrows.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":45665847115829,"sku":"ByrdShop_0691081069","price":93.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8139\/0901\/files\/9780691081069.jpg?v=1782410043","url":"https:\/\/atxbooks.com\/products\/populations-in-a-seasonal-environment-monographs-in-population-biology-5-9780691081069","provider":"ATX Books","version":"1.0","type":"link"}