As the Antarctic Ice Pack Recedes, a Fragile Ecosystem Hangs in the Balance

Gross, Liza

doi:10.1371/journal.pbio.0030127

Cited by 26 publications

(17 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effects of climate change on the Benguela Current system are poorly known, but declines and eastward shifts in pelagic resources observed during the past decades indicate the direction of ongoing changes (Hutchings et al 2009). The prevailing climate change models predict continued ocean warming, earlier break-up of annual sea ice, and large-scale reduction in overall Antarctic sea-ice cover (Gross 2005). The recent loss of sea ice in the Antarctic Peninsula coincided with a decline in abundance of Antarctic krill (Loeb et al 1997, Atkinson et al 2004) -a clear signal of major environmental changes that could occur throughout the Southern Ocean and within our study sector.…”

Section: Future Climate and Conservation Implicationsmentioning

confidence: 67%

Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island

Péron¹,

Delord²,

Phillips³

et al. 2010

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Marine environments experience seasonal variation in physical and biological parameters, with consequent changes in predator distributions. During the breeding period, proximity to suitable feeding sites is essential for central place foragers, whereas during the non-breeding period their distribution is relatively unconstrained. We combined light-based geolocation and satellite tracking to investigate seasonal variation in foraging grounds and behaviour of white-chinned petrels from Kerguelen Island. Birds were associated with highly productive areas throughout the year. During breeding (summer), they performed long commuting trips from the colony to distant, productive Antarctic waters. Thereafter, birds migrated 5200 km westwards to the Benguela upwelling system off Namibia and South Africa to spend the winter. This seasonal shift of foraging grounds coincides with a change in activity patterns; much less time was spent in flight in winter than in summer. Individual variability in the locations of foraging zones and seasonal/daily activity patterns was low. Trip durations were shorter during chick-rearing than incubation, although birds often travelled as far or farther, tracking the gradual break up of pack ice. Habitat use models revealed an association with distance to sea-ice edge and chlorophyll a gradient during incubation, whereas sea surface temperature and chlorophyll a gradient best explained habitat use during chick rearing. White-chinned petrels are likely to overlap with other marine predators and fisheries throughout the year. Fishery bycatch constitutes the most significant direct threat to petrels at sea. Moreover, future climate-induced reductions in productivity could affect birds year-round.

show abstract

Section: Future Climate and Conservation Implicationsmentioning

confidence: 67%

Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island

Péron¹,

Delord²,

Phillips³

et al. 2010

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…All of the problems involved a "Save the Animals" theme, which was intended to interest middle school youth by showing them how their energyrelated behaviors could affect animals all over the world. For example, using electricity produced by burning coal can increase the levels of carbon dioxide in the atmosphere, which can have effects on animals (Gross, 2005). The "studio" part of Studio STEM refers to the informal learning environment that allows for creative explorations of strategies to solve the problems.…”

Section: Studio Stem Programmentioning

confidence: 99%

The effects of an afterschool STEM program on students’ motivation and engagement

et al. 2017

View full text Add to dashboard Cite

Background: One significant factor in facilitating students' career intentions and persistence in STEM (science, technology, engineering, and mathematics) fields is targeting their interests and motivation before eighth grade. To reach students at this critical stage, a design-based afterschool STEM program, titled Studio STEM, was implemented to foster motivation and engagement in STEM topics and activities. The purpose of this study is twofold: (a) to investigate how Studio STEM affected students' beliefs about science and whether these beliefs differed from their peers who did not participate in the program, and (b) to examine a case study of one Studio STEM implementation to investigate elements of the curriculum that motivated students to engage in the program. Results: After completing two Studio STEM programs, participants' ratings of their values for science and science competence were higher than those of non-participants. In addition, the Studio STEM participants' motivational beliefs about science and intentions to pursue a college degree were more resilient over time than their peers. We also found that students could be motivated in a voluntary afterschool program (Studio STEM) in which they grappled with STEM concepts and activities, and could verbalize specific program elements that motivated them. Conclusions: Through this study, we found that students could be motivated in Studio STEM and that the experience had a positive impact on their perceptions about science as a field. Importantly, Studio STEM appeared to halt the decline in these students' motivational beliefs about science that typically occurs during the middle school years, indicating that afterschool programs can be one way to help students maintain their motivation in science. Studying the program features that the students found motivating may help educators to make connections between research and theory, and their classroom instruction to motivate their students.

show abstract

“…These changes are often most apparent at species range edges, where ecological conditions are typically already at the species' limit of tolerance, and where the most dramatic effects are predicted to occur, ultimately resulting in an alteration of the species range (Hampe and Petit, 2005;Parmesan, 2006). However, conditions are altered range-wide such that changes in species' range optimum and range limits have been widely reported (Gross, 2005;Lenoir et al, 2008;Maggini et al, 2011;Parmesan et al, 1999). Limitations to the poleward and equatorial expansion of species are driven by different factors, usually cold stress in northern populations and a combination of drought and high temperature at the southern limit (Hampe and Petit, 2005), though interspecific competition also plays a key role (Woodward, 1987).…”

Section: Introductionmentioning

confidence: 99%

Interactions between growth, demography and biotic interactions in determining species range limits in a warming world: The case of Pinus sylvestris

Matías

Jump

2012

Forest Ecology and Management

122

View full text Add to dashboard Cite

As the Antarctic Ice Pack Recedes, a Fragile Ecosystem Hangs in the Balance

Cited by 26 publications

References 8 publications

Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island

Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island

The effects of an afterschool STEM program on students’ motivation and engagement

Interactions between growth, demography and biotic interactions in determining species range limits in a warming world: The case of Pinus sylvestris

Contact Info

Product

Resources

About