Results 41 to 50 of about 53,398 (254)
People and Nature, EarlyView.Abstract A keystone species is one whose influence is disproportionate to its abundance, the absence of which would change the dynamics of an ecological or human community. Despite its widespread use in the scientific literature, there is a limited understanding of how the keystone concept is defined or measured, or applied in practice, and especially ...
Natasha R. Serrao +5 more
wiley +1 more source
Slavia Antiqua, 2014 Did Everybody in Gniezno Ice-Skate? Ice Skates from the Settlement Targowisko in Gniezno – on the Means of Their Use in the Middle Ages and Not Only When writing the present article, the question was posed how common the use of ice skates had been in ...
Kamilla Waszczuk +3 more
doaj +1 more source
All their eggs in one basket: a rocky reef nursery for the longnose skate (Raja rhina Jordan & Gilbert, 1880) in the southern California Bight [PDF]
, 2008 Skates (family Rajidae) are oviparous and lay tough, thick-walled eggs. At least some skate species lay their eggs in spatially restricted nursery grounds where embryos develop and hatch (Hitz, 1964; Hoff, 2007).
Cochrane, Guy +4 more
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Precision teaching and fluency: the effects of charting and goal-setting on skaters’ performance [PDF]
, 2010 This research involved three successive studies where precision teaching methods were used to increase roller skaters performance rates of basic skating skills. The first study compared precision teaching methods both with and without the use of charting
Foster, T. Mary +2 more
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PLANTS, PEOPLE, PLANET, EarlyView.The preservation and revitalization of mycocultural heritage, developed over centuries of human‐mushroom interaction, contributes to safeguarding both natural ecosystems and the promotion of sustainable rural development, one of the biggest global challenges currently faced by humankind.
Elisette Ramírez‐Carbajal +8 more
wiley +1 more source
Latin American Journal of Aquatic Research, 2012 Competition for food could be a major force driving changes in the community structure of skates (Rajidae) subjected to fishing exploitation. Under this hypothesis, small skates are released from competition with larger skates after fishing has depleted ...
Natalia L Ruocco +5 more
doaj +1 more source
Adult chondrogenesis and spontaneous cartilage repair in the skate, Leucoraja erinacea
eLife, 2020 Mammalian articular cartilage is an avascular tissue with poor capacity for spontaneous repair. Here, we show that embryonic development of cartilage in the skate (Leucoraja erinacea) mirrors that of mammals, with developing chondrocytes co-expressing ...
Aleksandra Marconi +2 more
doaj +1 more source
Sliding Doors: Frame Uptake and Rejection by Learners in a Museum‐Based Climate Learning Experience
Science Education, EarlyView.ABSTRACT Science education efforts that support public understanding of modern climate change are critically needed. However, implementing climate‐related learning experiences can be challenging, as public audiences tend to experience a wide range of understandings of and emotions around the issue. In light of these challenges, many scholars have posed
Lynne Zummo +7 more
wiley +1 more source
DiversityThe large variation in vertebral shape and calcification observed among elasmobranch species prevents using a single method for enhancing growth bands and reading age.
Umberto Scacco +5 more
doaj +1 more source
Conservation Biology of Elasmobranchs [PDF]
, 1993 Elasmobranchs are vital and valuable components of the marine biota. From an ecological perspective they occupy the role of top predators within marine food webs, providing a regulatory control that helps balance the ecosystem.
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