Essays about: "predators"

Showing result 1 - 5 of 55 essays containing the word predators.

  1. 1. Identification of core gut bacterial community of royal pair of a fungus-growing termite, Macrotermes natalensis

    University essay from Högskolan i Skövde/Institutionen för biovetenskap

    Author : Jayalal Kalathilparambil Jayanthan; [2019]
    Keywords : ;

    Abstract : Approximately 30 million years ago, ancestors of fungus-growing termites started an obligate mutualistic relationship with a Basidiomycete fungus Termitomyces. The success of this obligate relation is the division of labour and reliance on termite caste gut microbial symbionts. READ MORE

  2. 2. Does Asellus aquaticus change its pigmentation when given different types of food?

    University essay from Linköpings universitet/Biologi

    Author : Angelica Weisner; [2019]
    Keywords : Asellus aquaticus; pigmentation; growth; phenotypic plasticity; stoneworts; decaying terrestrial leaves;

    Abstract : When an animal’s pigmentation matches the background across various types of environments, it is potentially an example of cryptic pigmentation, most likely as a response to natural selection by visually oriented predators. One example of cryptic pigmentation is phenotypic plasticity, meaning that an organism can exhibit different phenotypes in different environments. READ MORE

  3. 3. Probabilistic ecological risk assessment of secondary poisoning from DDT

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Alice Rundegren; [2019]
    Keywords : probabilistisk riskbedömning; toppredatorer; DDT; diklordifenyltrikloretan; plantskola; skogsplantskola; artkänslighetsfördelning; bioackumulering; förorenad mark; indirekt exponering; Monte Carlo simulering; probabilistic risk assessment; plant nursery; species sensitivity distribution; polluted soil; indirect exposure; bioaccumulation; Monte Carlo simulation; dichlorodiphenyltrichloroethane; Earth and Environmental Sciences;

    Abstract : Although prohibited since decades, dichlorodiphenyltrichloroethane (DDT) and its metabolites still remain in the soil and pose a threat to ecosystems, where especially birds are susceptible to toxic effects. In this thesis, a model developed in the 1990s was used and updated in order to estimate the risks of DDT to top predators at a forest-plant nursery site. READ MORE

  4. 4. The LIFE GoodStream project in Trönninge:current and expected effects on amphibianpopulations and otter presence : in collaboration with LIFE GoodStream andHushållningssällskapet in Halland

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap; Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Sofia Hedman; Karin Jermer; [2019]
    Keywords : ;

    Abstract : LIFE GoodStream is an EU-financed conservation project, which strives to improve the ecologicalstatus of a stream in the agricultural landscape of Halland County, Sweden. Since 2015, the project hasconstructed amphibian ponds, restored wetlands, removed dispersal barriers and worked to return theTrönninge stream (Trönningeån) to more natural conditions. READ MORE

  5. 5. Humpback whale (Megaptera novaeangliae) location in Southeast Alaska : modeling the influence of mesoscale krill (Euphausiacea) patch depth and size

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Christine Walder; [2018]
    Keywords : physical geography and ecosystem analysis; humpback whales; krill; patchiness; vertical distribution; Generalized Additive Models GAMs ; spatial modeling; Earth and Environmental Sciences;

    Abstract : Humpback whales ([i]Megaptera novaeangliae[/i]) require dense prey aggregations due to the high energetic cost of their feeding methods. Modeling studies have shown that when whales are on their feeding grounds, they are closely associated with high prey concentrations. READ MORE