Invertebrate diversity in groundwater‐filled lava caves is influenced by both neutral‐ and niche‐based processes DOI Creative Commons
Bjarni K. Kristjánsson,

Doriane Combot,

Anett Reilent

и другие.

Ecology and Evolution, Год журнала: 2024, Номер 14(6)

Опубликована: Июнь 1, 2024

Abstract Understanding which factors shape and maintain biodiversity is essential to understand how ecosystems respond crises. Biodiversity observed in ecological communities a result of the interaction various can be classified as either neutral‐ or niche‐based. The importance these processes has been debated, but many scientists believe that both are important. Here, we use unique groundwater‐filled lava caves near Lake Mývatn, examine versus niche‐based for shaping invertebrate communities. We studied diversity benthic epibenthic related them variables. hypothesized if neutral main drivers community structure would not see any clear relationship between within factors. If important should relationships variation variables across caves. Both were species poor, with low densities invertebrates, showing resource limited oligotrophic nature systems. Unusually Icelandic freshwater ecosystems, dominated by Chironomidae (Diptera) larvae, rather crustaceans, mainly Cladocera. shaped environmental variables, suggesting they may have structured primarily processes. availability energy, some extent pH, structure, although still relevant. results suggest freshwater, research focus on understanding ponds representative number extremely vulnerable human disturbance, making it even more their maintained.

Язык: Английский

The evolution of genomic organization through chromosomal rearrangements in Arctic charr (Salvelinus alpinus) DOI
Christine L. Ouellet‐Fagg,

Anne A. Easton,

Kevin J. Parsons

и другие.

Genome, Год журнала: 2025, Номер 68, С. 1 - 19

Опубликована: Янв. 1, 2025

Chromosomal rearrangements (CRs) can play an important role in evolutionary diversification by preserving linkage among favourable alleles through reduced recombination and/or reducing hybrid fitness due to genomic incompatibilities. Our goal was determine what extent CRs contribute known patterns of genetic variation Arctic charr ( Salvelinus alpinus). To address this goal, we compared maps identify whole arm and smaller scale structural variants (SVs) such as translocations/transpositions inversions found groups populations that reflect the temporal sequence geographic isolation events. If differentiation, expected would be specific glacial lineages, clusters within sympatric morphs. We detected fusions fissions chromosome arms SV involving sex-determining gene sdY) inversions. Several were shared across from Atlantic Canadian Icelandic lineage, between two morphs populations, suggesting their origin predates refugia. Other single which suggests a more recent these refugia, during post-glacial recolonization contemporary populations. Thus, relatively little differentiation at different scales but represent pool standing for evolution.

Язык: Английский

Процитировано

0
Invertebrate diversity in groundwater‐filled lava caves is influenced by both neutral‐ and niche‐based processes DOI Creative Commons
Bjarni K. Kristjánsson,

Doriane Combot,

Anett Reilent

и другие.

Ecology and Evolution, Год журнала: 2024, Номер 14(6)

Опубликована: Июнь 1, 2024

Abstract Understanding which factors shape and maintain biodiversity is essential to understand how ecosystems respond crises. Biodiversity observed in ecological communities a result of the interaction various can be classified as either neutral‐ or niche‐based. The importance these processes has been debated, but many scientists believe that both are important. Here, we use unique groundwater‐filled lava caves near Lake Mývatn, examine versus niche‐based for shaping invertebrate communities. We studied diversity benthic epibenthic related them variables. hypothesized if neutral main drivers community structure would not see any clear relationship between within factors. If important should relationships variation variables across caves. Both were species poor, with low densities invertebrates, showing resource limited oligotrophic nature systems. Unusually Icelandic freshwater ecosystems, dominated by Chironomidae (Diptera) larvae, rather crustaceans, mainly Cladocera. shaped environmental variables, suggesting they may have structured primarily processes. availability energy, some extent pH, structure, although still relevant. results suggest freshwater, research focus on understanding ponds representative number extremely vulnerable human disturbance, making it even more their maintained.

Язык: Английский

Процитировано

0