8 Works

Biometric conversion factors as a unifying platform for comparative assessment of invasive freshwater bivalves

Neil Coughlan, Eoghan Cunningham, Ross Cuthbert, Patrick Joyce, Pedro Anastacio, Filipe Banha, Nicolás Bonel, Stephanie Bradbeer, Elizabeta Briski, Vincent Butitta, Zuzana Čadková, Jaimie Dick, Karel Douda, Lawrence Eagling, Noé Ferreira-Rodríguez, Leandro Hünicken, Mattias Johansson, Louise Kregting, Anna Labecka, Deliang Li, Florencia Liquin, Jonathan Marescaux, Todd Morris, Patrycja Nowakowska, Małgorzata Ożgo … & Francisco Sylvester
1. Invasive bivalves continue to spread and negatively impact freshwater ecosystems worldwide. As different metrics for body size and biomass are frequently used within the literature to standardise bivalve related ecological impacts (e.g. respiration and filtration rates), the lack of broadly applicable conversion equations currently hinders reliable comparison across bivalve populations. To facilitate improved comparative assessment amongst studies originating from disparate geographic locations, we report body size and biomass conversion equations for six invasive freshwater...

Cellular costs underpin micronutrient limitation in phytoplankton

J. Scott P. McCain, Alessandro Tagliabue, Edward Susko, Eric P. Achterberg, Andrew E. Allen & Erin M. Bertrand
Micronutrients control phytoplankton growth in the ocean, influencing carbon export and fisheries. It is currently unclear how micronutrient scarcity affects cellular processes, and how interdependence across micronutrients arises. We show that proximate causes of micronutrient growth limitation and interdependence are governed by cumulative cellular costs of acquiring and using micronutrients. Using a mechanistic proteomic allocation model of a polar diatom focused on iron and manganese, we demonstrate how cellular processes fundamentally underpin micronutrient limitation, and...

Influence of past climate change on phylogeography and demographic history of narwhals, Monodon monoceros

Marie Louis, Mikkel Skovrind, Jose Alfredo Samaniego Castruita, Cristina Garilao, Kristin Kaschner, Shyam Gopalakrishnan, James Haile, Christian Lydersen, Kit Kovacs, Eva Garde, Mads Peter Heide-Jørgensen, Lianne Postma, Steve Ferguson, Eske Willerslev & Eline Lorenzen
The Arctic is warming at an unprecedented rate, with unknown consequences for endemic fauna. However, Earth has experienced severe climatic oscillations in the past, and understanding how species responded to them might provide insight into their resilience to near-future climatic predictions. Little is known about the responses of Arctic marine mammals to past climatic shifts, but narwhals (Monodon monoceros) are considered one of the endemic Arctic species most vulnerable to environmental change. Here, we analyze...

Microbiota associated with echinoid eggs and the implications for maternal provisioning

Tyler Carrier & Justin McAlister
Mothers impact the survival and performance of their offspring through the resources they provision, and the degree of maternal investment in an individual offspring can be broadly estimated by egg size for organisms that lack parental care. Animals may also actively maintain symbiotic partnerships with microorganisms through the germ line, but whether microbes are a fundamental component of maternal provisioning is an untested hypothesis in evolutionary symbiosis. We present a preliminary test of this by...

Prey and predator density-dependent interactions under different water volumes

Ross Cuthbert, Tatenda Dalu, Ryan Wasserman, Arnaud Sentis, Olaf Weyl, William Froneman, Amanda Callaghan & Jaimie Dick
Predation is a critical ecological process that directly and indirectly mediates population stabilities, as well as ecosystem structure and function. The strength of interactions between predators and prey may be mediated by multiple density-dependences concerning numbers of predators and prey. In temporary wetland ecosystems in particular, fluctuating water volumes may alter predation rates through differing search space and prey encounters rates. Using a functional response approach, we examined the influence of predator and prey densities...

Sex-specific foraging of an apex predator puts females at risk of human-wildlife conflict

Hendrik Schultz, Kevin Chang, Sarah Bury, Anne Gaskett, Todd Dennis, Stefanie Ismar-Rebitz, Ian Southey, Rebecca Hohnhold & Craig Millar
Urbanisation and anthropogenic alteration of ecosystems has led to conflict between humans and wildlife. Such conflict is often observed in apex predators. Although human-wildlife conflict has been extensively studied, male/female differences in behaviour are rarely considered. We investigated male/female differences in foraging behaviour of the predatory/scavenging brown skua Catharacta antarctica lonnbergi breeding on a New Zealand island nature reserve in proximity to farmland. These skuas are subject to culling, when perceived as a threat to...

Sea freshening may drive the ecological impacts of emerging and existing invasive alien species dataset

James Dickey, Ross Cuthbert, Gregor Steffen, Jaimie Dick & Elizabeta Briski
Aim: The spread of invasive non-native species (INNS) will pose major threats to global biodiversity over the coming decades. However, predicting how key effects of climate change will influence the abilities of INNS to establish and exert ecological impact is a major challenge. One overlooked aspect of global change is the expected freshening of certain marine systems, which may interact with INNS and lead to drastic effects on community structure and stability. Location: Baltic Sea,...

Dissolved Organic Matter in the Upwelling System off Peru from METEOR cruises M136 and M138

Marie Maßmig & Anja Engel

Registration Year

  • 2021
    8

Resource Types

  • Dataset
    8

Affiliations

  • GEOMAR Helmholtz Centre for Ocean Research Kiel
    7
  • Queen's University Belfast
    3
  • Bernardino Rivadavia Natural Sciences Museum
    1
  • University of North Georgia
    1
  • Water Research Institute
    1
  • South African Institute for Aquatic Biodiversity
    1
  • National University of Salta
    1
  • Fiji National University
    1
  • University of Gdańsk
    1
  • University of Zaragoza
    1