Conservation Biology

Human Impact: Human activities threaten biodiversity, including habitat destruction and pollution.
Ethical Consideration: Moral reasons to preserve species and maintain biodiversity.
Ecosystem Services: Nature provides essential services such as pollination, water purification, and climate regulation.
Interdisciplinary Approach: Conservation biology involves various fields: ecology, physiology, molecular biology, evolutionary biology, and genetics to conserve biological diversity.

Biodiversity is recognized at three levels:
- Genetic diversity: variety of genes within a species
- Species diversity: The variety of species in a given ecosystem or globally.
- Ecosystem diversity: The variety of ecosystems in a region.

Population Viability: Small populations face risks of:
- inbreeding
- genetic drift
- lowering fitness and adaptability.
Consequences of Loss:
- Reduced genetic variability leads to lower reproduction rates and higher mortality.

Definition: The number of species in an ecosystem or across the biosphere.
Current Statistics: 2.16 million named species as of 2021, with estimates suggesting a total of 5 to 10 million species.

Cradle Model: Tropics as the origin of new species.
Museum Model: Tropics as areas where species persist.
Out of the Tropics Model: Emigration of species from tropics leads to global diversity.

Statistics: Various historical extinction rates reported in specific animal groups, emphasizing alarming trends in biodiversity loss.

Description of the IUCN Red List and categories of threatened species (Extinct, Critically Endangered, etc.).

Four Main Threats:
- Habitat loss
- Introduced species
- Overharvesting
- Global change

Impact of Human Activity: Habitat alteration from agriculture, forestry, urbanization, and pollution as primary threats to biodiversity.

Definition: Alien species introduced to new regions by humans, with some establishing and becoming invasive.
Impacts: Negative effects on local ecosystems and native species.

Definition and Impact: Harvesting species at unsustainable rates, exceeding the ability of their populations to rebound — especially for those with restricted habitats.

Increase in Protected Regions: Importance of expanding protected areas for biodiversity preservation and sustainability.

Conservation Priorities: Identification of hotspot regions crucial for conservation efforts due to their irreplaceable biodiversity.

National Legislation:
- Sites/areas of specific scientific interest
- National nature reserves
European Union Directives/other European initiatives:
- Special areas of conservation and special protection areas
Protected areas set up under Global Agreements:
- Ramsar (Wetland sites)
Marine Protected areas:
- Marine conservation zones
- Nature conservation marine protected areas

Movement corridor:
- Narrow strip or series of small clumps of habitat connecting otherwise isolated patches
Movement corridors promote dispersal and reduce inbreeding.
In areas of heavy human use, artificial corridors are sometimes constructed

Management Practices: Approaches taken to enhance water vole habitats, including biodiversity-focused management practices in urban settings.

Methodology: Use of innovative surveying methods like ground-penetrating radar to study and manage wildlife habitats.