Results 61 to 70 of about 59,124 (286)

Inferring Water Table Depth Dynamics from ENVISAT-ASAR C-Band Backscatter over a Range of Peatlands from Deeply-Drained to Natural Conditions

open access: yesRemote Sensing, 2018
Water table depth (WTD) is one of the key variables controlling many processes in peatlands. Reliable WTD estimates based on remote sensing data would advance peatland research from global-scale climate monitoring to field-scale ecosystem management ...
Michel Bechtold   +3 more
doaj   +1 more source

Intraspecific variation of cochlear morphology in bowhead and beluga whales

open access: yesThe Anatomical Record, EarlyView.
Abstract The bony labyrinth of the petrosal bone, a distinctive feature of mammal skulls, is often identified in micro‐computed tomography imaging to infer species' physiological and ecological traits. When done as part of a comparative study, one individual specimen is normally considered representative of a species, and intraspecific variation is ...
John Peacock, J. G. M. Thewissen
wiley   +1 more source

Predicting Vascular Plant Diversity in Anthropogenic Peatlands: Comparison of Modeling Methods with Free Satellite Data

open access: yesRemote Sensing, 2017
Peatlands are ecosystems of great relevance, because they have an important number of ecological functions that provide many services to mankind. However, studies focusing on plant diversity, addressed from the remote sensing perspective, are still ...
Ivan Castillo-Riffart   +3 more
doaj   +1 more source

Fen Bilgisi Öğretmen Adaylarının Fen Öğretimi Oryantasyonlarının Belirlenmesi

open access: yesYuzunci Yil Universitesi Egitim Fakultesi Dergisi, 2017
Belli bir sinif seviyesindeki fen ogretimine iliskin hedeflerle ilgili bilgi ve inanclar ile fen ogretimine iliskin genel dusunce sekilleri olarak tanimlanan ogretim oryantasyonlari ogretmen uygulamalarini etkilemekte ve sekillendirmektedir. Bu calisma ile fen bilgisi ogretmen adaylarinin ogretmen yetistirme programinin son doneminde sahip olduklari ...
openaire   +3 more sources

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

open access: yesThe Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano   +3 more
wiley   +1 more source

Dynamics of viral abundance and diversity in a Sphagnum-dominated peatland: temporal fluctuations prevail over habitat

open access: yesFrontiers in Microbiology, 2016
Viruses impact microbial activity and carbon cycling in various environments, but their diversity and ecological importance in Sphagnum-peatlands are unknown.
Flore Charlotte Ballaud   +5 more
doaj   +1 more source

Fen Bilimleri Öğretmenlerinin Fen ve Matematik Entegrasyonunun Fen Derslerinde Uygulanmasına Yönelik Görüşleri

open access: yesDokuz Eylül Üniversitesi Buca Eğitim Fakültesi Dergisi
Fen ve matematik eğitiminde temel bilgi, beceri kazanımı sürecinde transfer ve uygulama önemlidir. Entegrasyon bilgi ve becerilerin transfer edilmesi, uygulanması için uygun ortamlar oluşturulmasını sağlar. Bu araştırmanın amacı entegrasyonun uygulayıcısı olan fen bilimleri öğretmenlerinin bu konuya yönelik düşüncelerini ve deneyimlerini ortaya ...
Fatma Nur Büyükbayraktar   +5 more
openaire   +2 more sources

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

open access: yesThe Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt   +4 more
wiley   +1 more source

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

open access: yesThe Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe   +4 more
wiley   +1 more source

Carbon exchange over four growing seasons for a subarctic sedge fen in northern Manitoba, Canada

open access: yesArctic Science, 2015
Net ecosystem exchange of carbon was measured using eddy covariance for four growing seasons at a subarctic hummocky fen in northern Manitoba, Canada. Over a 115 day measurement period each year, cumulative net ecosystem exchange of carbon ranged from a ...
Krista L. Hanis   +4 more
doaj   +1 more source

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