Sökning: "Stage-structured biomass model"

Hittade 2 uppsatser innehållade orden Stage-structured biomass model.

1. 1. The effects of fishing on stability of a food web under climate warming

   Master-uppsats, SLU/Dept. Of Aquatic Resources

   Författare :Gabriel Nordström; [2023]
   Nyckelord :fishing; climate change; temperature; predator; consumer; resource; stage-specific; food webs; ontogenetic assymetry; biomass overcompensation; emergent Allee effects; limit cycles;

   Sammanfattning : Predicting the effects of fishing in a warmer environment caused by climate change requires knowledge of what trophic level is fished on, the physiological effects of temperature on fish, and how these two affect ecological interactions. Both temperature and fishing are known to affect the stability of food webs in several ways. LÄS MER

3. 2. Change in uptake and transfer of zinc in the food chain when predatory fish disappear from the system

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Sara Westerström; [2023]
   Nyckelord :Aquatic food web; Food chain structure; Trophic transfer; Decline of top predators; Stage-structured biomass model; Pollutants; Heavy metals; Zinc; Akvatisk födoväv; Födovävsstruktur; Trofisk överföring; Minskning av toppredatorer; Stegstrukturerad biomassamodell; Föroreningar; Tungmetaller; Zink;

   Sammanfattning : There is a widespread distribution of possibly toxic heavy metals, such as zinc, in aquatic ecosystems. Simultaneously aquatic food webs are changing due to declining predatory fish stocks. LÄS MER