Results 41 to 50 of about 13,312 (253)

Nitrate storage and dissimilatory nitrate reduction by eukaryotic microbes

Frontiers in Microbiology, 2015
The microbial nitrogen cycle is one of the most complex and environmentally important element cycles on Earth and has long been thought to be mediated exclusively by prokaryotic microbes.
Anja eKamp, Signe eHøgslund, Nils eRisgaard-Petersen, Peter eStief   +3 more
doaj   +1 more source

Paleocene orthophragminids from the Lakadong Limestone, Mawmluh Quarry section, Meghalaya (Shillong, NE India). Implications for the regional geology and paleobiogeography [PDF]

, 2018
The late Paleocene orthophragminids, hitherto poorly known from the Himalayan foreland basins, are studied from the Lakadong Limestone in Meghalaya, northeastern India, in order to establish a systematic, biostratigraphic, and paleobiogeographical ...
Barattolo, Filippo, Drobne, Katica, Pereira, Christer, Pignatti, Johannes, Saraswati, Pratul Kumar, Yücel, Ali Osman, Özcan, Ercan   +6 more
core   +1 more source

When invasions go unnoticed: Public perception of the freshwater jellyfish Craspedacusta sowerbii in Europe

People and Nature, EarlyView.
Abstract Biological invasions are a major driver of biodiversity loss, yet inconspicuous or “cryptic” species often escape detection and public awareness, limiting management responses. We investigated the freshwater jellyfish Craspedacusta sowerbii, likely native to China and now present on six continents, through a 22‐month multilingual online survey
Guillaume Marchessaux, Kristína Slovák Švolíková, Barbora Števove, Ali Serhan Tarkan, Daniela Giannetto, Cristina Preda, Belma Kalamujić Stroil, Maciej K. Mańko, András Abonyi, Álmos Becz, Massimo Morpurgo, Evgeny A. Pakhomov, Levan Mumladze, Mar Bosch‐Belmar, Aino Hosia, Patricia Ventura, Jamileh Javidpour, Florian Lüskow   +17 more
wiley   +1 more source

Protein biomass quantification of unbroken individual foraminifers using nano-spectrophotometry [PDF]

Biogeosciences, 2012
The ecological role of foraminifers has been largely unknown partly owing to difficulties in determining their individual biomass, although foraminifers are abundant in surface marine sediments.
A. Movellan, R. Schiebel, M. V. Zubkov, A. Smyth, H. Howa   +4 more
doaj   +1 more source

Sedimentation and subsidence history of the Lomonosov Ridge [PDF]

, 2006
During the first scientific ocean drilling expedition to the Arctic Ocean (Arctic Coring Expedition [ACEX]; Integrated Ocean Drilling Program Expedition 302), four sites were drilled and cored atop the central part of the Lomonosov Ridge in the Arctic ...
Backman, J., Brinkhuis, H., Clemens, S., Cronin, T., Dickens, G.R., Eynaud, F., Gattacceca, J., Jakobsson, M., Jordan, R.W., Kaminski, M., King, J., Koç, N., Martinez, N.C., Matthiessen, J., McInroy, D., Moore Jr., T.C., Moore, T.C., Moran, K., O'Regan, M., Onodera, J., Pälike, H., Rea, B., Rio, D., Sakamoto, T., Smith, D.C., St. John, K.E.K., Stein, R., Suto, I., Suzuki, N., Takahashi, K., Watanabe, M., Yamamoto, M.   +31 more
core   +3 more sources

Complex multitrophic species interactions and fitness costs: Intricate consequences of jasmonate and salicylate induced plant defences

Journal of Animal Ecology, EarlyView.
This study reveals how long‐term activation of jasmonic and salicylic acid signalling reshapes arthropod communities and plant fitness across seasons. By showing that induced defences generate contrasting outcomes and cascading trade‐offs across trophic levels, it challenges the assumption that induced resistance is uniformly beneficial in natural ...
Mônica F. Kersch‐Becker, Guilherme P. Pinheiro, Thaís S. Schweller, Martin Pareja, Victoria M. Pocius, José R. Trigo, Gustavo Q. Romero   +6 more
wiley   +1 more source

Northeastern Atlantic benthic foraminifera during the last 45,000 years: Changes in productivity seen from the bottom up [PDF]

, 1995
We studied benthic foraminifera from the last 45 kyr in the >63 mu m size fraction in Biogeochemical Ocean Flux Studies (BOFS) cores 5K (50 degrees 41.3'N, 21 degrees 51.9'W, depth 3547 m) and 14K (58 degrees 37.2'N, 19 degrees 26.2'W, depth 1756 m), at ...
Booth, L, Maslin, M, Shackleton, NJ, Thomas, E   +3 more
core   +1 more source

Analysis of the nursing diagnosis of [ineffective breathing pattern (00032)] in patients hospitalized with COVID‐19: A cross‐sectional study

International Journal of Nursing Knowledge, EarlyView.
Abstract Purpose To analyze the prevalence, accuracy of clinical indicators and related factors of the nursing diagnosis of ineffective breathing pattern (00032) in patients hospitalized due to COVID‐19. Methods This is a cross‐sectional study conducted in a public hospital, involving 250 adult hospitalizations between 2020 and 2021.
Caio Rodrigo Menezes dos Santos, Thiago de Jesus Santos, Andreia Centenaro Vaez, Damião da Conceição Araújo   +3 more
wiley   +1 more source

SMALLER FORAMINIFERS FROM THE LOWER PERMIAN EMARAT FORMATION, EAST OF FIRUZKUH (CENTRAL ALBORZ, IRAN)

Rivista Italiana di Paleontologia e Stratigrafia, 2016
The uppermost Carboniferous-Lower Permian Dorud Group of the Gaduk section in Central Alborz (Iran) is more than 44 m-thick; it includes thick succession of conglomerates, quartzarenites, calcareous sandstones, oncolitic fusulinid limestones, sandy ...
HAMED YARAHMADZAHI, DANIEL VACHARD, BAHAREH DIBADIN   +2 more
doaj   +1 more source

Seasonal and interannual variability in population dynamics of planktic foraminifers off Puerto Rico (Caribbean Sea) [PDF]

Journal of Micropalaeontology, 2019
The state of a population of planktic foraminifers at a certain time reflects multiple processes in the upper ocean, including environmental conditions to which the population was exposed during its growth, the age of the cohorts, and spatiotemporal ...
A. Jentzen, A. Jentzen, J. Schönfeld, A. K. M. Weiner, A. K. M. Weiner, M. F. G. Weinkauf, M. F. G. Weinkauf, D. Nürnberg, M. Kučera   +8 more
doaj   +1 more source