105 Works

Species richness in North Atlantic fish: process concealed by pattern

Henrik Gislason, Jeremy Collie, Brian R. MacKenzie, Anders Nielsen, Maria De Fatima Borges, Teresa Bottari, Corina Chavez, Andrey V. Dolgov, Jakov Dulčić, Daniel Duplisea, Heino O. Fock, Didier Gascuel, Luís Gil De Sola, Jan Geert Hiddink, Remment Ter Hofstede, Igor Isajlović, Jónas Páll Jonasson, Ole Jørgensen, Kristján Kristinsson, Gudrun Marteinsdottir, Hicham Masski, Sanja Matić-Skoko, Mark R. Payne, Melita Peharda, Jakup Reinert … & Lilja Stefansdottir
Aim Previous analyses of marine fish species richness based on presence-absence data have shown changes with latitude and average species size, but little is known about the underlying processes. To elucidate these processes we use metabolic, neutral, and descriptive statistical models to analyse how richness responds to maximum species length, fish abundance, temperature, primary production, depth, latitude, and longitude, while accounting for differences in species catchability, sampling effort, and mesh size. Data Results from 53,382...

Data from: Drivers of neutral and adaptive differentiation in pike (Esox lucius) populations from contrasting environments

Johanna Sunde, Yeşerin Yıldırım, Petter Tibblin, Dorte Bekkevold, Christian Skov, Oscar Nordahl, Per Larsson & Anders Forsman
Understanding how eco-evolutionary processes and environmental factors drive population differentiation and adaptation are key challenges in evolutionary biology of relevance for biodiversity protection. Differentiation requires at least partial reproductive separation, which may result from different modes of isolation such as geographic isolation (allopatry) or isolation by distance (IBD), resistance (IBR), and environment (IBE). Despite that multiple modes might jointly influence differentiation, studies that compare the relative contributions are scarce. Using RADseq, we analyse neutral and...

Deriving population scaling rules from individual-level metabolism and life history traits - Code and Data

Rémy Denéchère, P. Daniël Van Denderen & Ken Haste Andersen
Individual metabolism generally scales with body mass with an exponent around 3/4. From dimensional arguments it follows that maximum population growth rate (rmax) scales with a -1/4 exponent. However, the dimensional argument implicitly assumes that offspring size is proportional to adult size. Here we calculate rmax from metabolic scaling at the level of individuals within size-structured populations while explicitly accounting for offspring size. We identify four general patterns of how rmax scales with adult mass...

Data from: All roads lead to home: panmixia of European eel in the Sargasso Sea

Thomas D Als, Michael M Hansen, Gregory E Maes, Martin Castonguay, Lasse Riemann, Kim Aarestrup, Peter Munk, Henrik Sparholt, Reinhold Hanel & Louis Bernatchez
European eels (Anguilla anguilla) spawn in the remote Sargasso Sea in partial sympatry with American eels (Anguilla rostrata), and juveniles are transported more than 5,000 kilometres back to the European and North African coasts. The two species have been regarded as classic textbook examples of panmixia, each comprising a single, randomly mating population. However, several recent studies based on continental samples have found subtle, but significant, genetic differentiation, interpreted as geographical or temporal heterogeneity between...

Data from: Sixty years of anthropogenic pressure: a spatio-temporal genetic analysis of brown trout populations subject to stocking and population declines

Michael Hansen, Dylan Fraser, Kristian Meier & Karen-Lise Mensberg
Analyses of historical samples can provide invaluable information on changes to the genetic composition of natural populations resulting from human activities. Here, we analyze 21 microsatellite loci in historical (archived scales from 1927-1956) and contemporary samples of brown trout (Salmo trutta) from six neighbouring rivers in Denmark, to compare the genetic structure of wild populations before and after population declines and stocking with non-local strains of hatchery trout. We show that all populations have been...

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