4 Works

Data from: Multi-decadal changes in phytoplankton biomass in northern temperate lakes as seen through the prism of landscape properties

Aleksey Paltsev
Ecologists collectively predict that climate change will enhance phytoplankton biomass in northern lakes. Yet there are unique variations in the structures and regulating functions of lakes to make this prediction challengeable and, perhaps, inaccurate. We used archived Landsat TM/ETM+ satellite products to estimate epilimnetic chlorophyll-a concentration (Chl-a) as a proxy for phytoplankton biomass in 281 northern temperate lakes over 28 years. We explored the influence of climate (air temperature, precipitation) and landscape proxies for nutrient...

Plasticity in floral longevity and sex-phase duration of Lobelia siphilitica in response to simulated pollinator declines

Christina Caruso & Kiana Lee
Premise: Pollinator declines can reduce the quantity and quality of pollination services, resulting in less pollen deposited on flowers and lower seed production by plants. In response to these reductions, plants can increase the opportunity for pollination by plastically adjusting their floral traits, including floral longevity and sex-phase duration. However, studies of plant responses to pollinator declines have primarily focused on floral evolution across generations rather than plasticity in floral traits within a generation. Methods:...

Hierarchy of fear: experimentally testing ungulate reactions to lion, African wild dog and cheetah

Liana Zanette, Noa Rigoudy, Michael Clinchy, Mike Peel, Sarah Huebner & Craig Packer
Experiments have begun demonstrating that the fear (antipredator responses) large carnivores inspire in ungulates can shape ecosystem structure and function. Most such experiments have focused on the impacts of either just one large carnivore, or all as a whole, rather than the different impacts different large carnivores may have in intact multi-predator-prey systems. Experimentally testing the relative fearfulness ungulates demonstrate toward different large carnivores is a necessary first step in addressing these likely differing impacts....

Invasive widow spiders perform differently at low temperatures than conspecifics from the native range

Monica A. Mowery, Susan E. Anthony, Alexandra N. Dorison, Andrew C. Mason & Maydianne C. B. Andrade
Temperature challenges are one of the leading abiotic causes of success or failure of non-native species in a novel environment, and this is particularly true for low temperatures. Establishing and reproducing in a novel thermal environment can alter survival, behaviour, and traits related to fitness. It has been proposed that plasticity or adaptation of thermal tolerance may allow an introduced species to thrive, or that successful invaders may be those with a thermal breadth in...

Registration Year

  • 2022
    4

Resource Types

  • Dataset
    4

Affiliations

  • Western University
    4
  • University of Minnesota
    1
  • University of Guelph
    1
  • Claude Bernard University Lyon 1
    1
  • University of Toronto
    1
  • University of the Witwatersrand
    1