Results 31 to 40 of about 562,073 (357)

The prelude to industrial whaling: identifying the targets of ancient European whaling using zooarchaeology and collagen mass-peptide fingerprinting

open access: yesRoyal Society Open Science, 2023
Taxonomic identification of whale bones found during archaeological excavations is problematic due to their typically fragmented state. This difficulty limits understanding of both the past spatio-temporal distributions of whale populations and of ...
Youri van den Hurk   +25 more
doaj   +1 more source

Freezing and chemical preservatives alter the stable isotope values of carbon and nitrogen of the Asiatic clam (Corbicula fluminea) [PDF]

open access: yes, 2011
We tested the impacts of most common sample preservation methods used for aquatic sample materials on the stable isotope ratios of carbon and nitrogen in clams, a typical baseline indicator organism for many aquatic food web studies utilising stable ...
Aurélia Martino   +22 more
core   +5 more sources

Historical influences on community ecology [PDF]

open access: yesProceedings of the National Academy of Sciences, 2005
Vitt and Pianka's analyses revealed significant dietary shifts at six major divergence points. Why does California, a large and topographically complex state that spans fogdrenched redwood groves to desert sand dunes, have 30 species of snakes, whereas roughly twice that number occur in five square miles of lowland Costa Rican rainforest?
openaire   +2 more sources

Placing the Maasai [PDF]

open access: yes, 2012
Examines the historical construction of Kenyan Maasai people and 'Maasailand' in the context of the interrelated networks of knowledge and practice in development, ecology and conservation and safari ...
Toogood, Mark
core  

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

The transformation of Caribbean coral communities since humans

open access: yesEcology and Evolution, 2021
The mass die‐off of Caribbean corals has transformed many of this region’s reefs to macroalgal‐dominated habitats since systematic monitoring began in the 1970s.
Katie L. Cramer   +6 more
doaj   +1 more source

Does degradation from selective logging and illegal activities differently impact forest resources? A case study in Ghana [PDF]

open access: yes, 2016
Degradation, a reduction of the ecosystem’s capacity to supply goods and services, is widespread in tropical forests and mainly caused by human disturbance.
Cazzolla Gatti, R.   +11 more
core   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

open access: yesMolecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken   +3 more
wiley   +1 more source

Historical framework to explain long-term coupled human and natural system feedbacks: application to a multiple-ownership forest landscape in the northern Great Lakes region, USA

open access: yesEcology and Society, 2015
Current and future human and forest landscape conditions are influenced by the cumulative, unfolding history of social-ecological interactions. Examining past system responses, especially unintended consequences, can reveal valuable insights that promote
Michelle M. Steen-Adams   +3 more
doaj   +1 more source

Les systèmes agricoles du passé peuvent-ils inspirer la transition écologique ?

open access: yesLes Nouvelles de l’Archéologie, 2020
Archaeology has a unique role to play in shaping the transition to more sustainable lifestyles. However, archaeology has so far had little impact in discussions of strategies to face major societal challenges such as how to ensure food security, adapt to
Doyle McKey
doaj   +1 more source

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