Results 71 to 80 of about 103,581 (321)

Phytoplankton community structures in Fushan Bay [PDF]

Advances in Engineering Research, 2015
This paper analyzed the community structures of phytoplankton in Fushan Bay in June to August 2002. Results showed that phytoplankton in Fushan Bay was dominated by Bacillariophyta and Pyrrophyta, whose species accounted for 74% and 24% of total phytoplankton species, respectively. Chaetoceros and Peridinium were the major genera of Bacillariophyta and
Sixi Zhu, Xiaoli Zhao, Xiuqin Yang, Fengyou Wang, Dongfang Yang   +4 more
openaire   +1 more source

What is “accuracy”? Rethinking machine learning classifier performance metrics for highly imbalanced, high variance, zero‐inflated species count data

Limnology and Oceanography: Methods, EarlyView.
Abstract Machine learning has opened the door for the automated sorting (classification) of images, holograms and acoustic backscatters of individual plankton, invertebrates, fish and marine mammals. However, this field is complicated by decades of paradoxically promising reports of classifier performance that do not correlate with real‐world uptake of
Bianca M. Owen, James R. Tweedley, Navid R. Moheimani, Chris S. Hallett, Jeffrey J. Cosgrove, Leopold P. O. Silberstein   +5 more
wiley   +1 more source

Future phytoplankton diversity in a changing climate

Nature Communications, 2021
Phytoplankton form the base of the marine ecosystem but current ocean models used for climate change projections are too simple to assess potential changes in plankton community structure.
Stephanie A. Henson, B. B. Cael, Stephanie R. Allen, Stephanie Dutkiewicz   +3 more
doaj   +1 more source

Effects of climate on size structure and functioning of aquatic food webs [PDF]

, 2010
In aquatic food webs, the role of body size is notoriously strong. It is also well known that temperature has an effect on body size. For instance, Bergmann’s rule states that body size increases from warm to cold climates.
Lacerot, G.
core  

Biomass partitioning in Florida phytoplankton communities

Journal of Plankton Research, 1991
Peer ...
Agustí, Susana, Duarte, Carlos M., Canfield, Daniel E.   +2 more
openaire   +2 more sources

Relationships between acoustic scattering layers and ocean stratification: An acoustic approach to estimate mixed layer depth

Limnology and Oceanography: Methods, EarlyView.
Abstract Ocean stratification, measured as mixed layer depth (MLD), is an important feature that influences many processes in the ocean; for example, by mediating the fluxes of momentum, heat and crucially key gases such as CO2 and oxygen from the atmosphere into the water column and vice versa. The conventional methods to measure stratification (e.g.,
Fabio Campanella, Jeroen van der Kooij, Liam Fernand   +2 more
wiley   +1 more source

Temperature orchestrates phytoplankton community and environment in mountain stream for enhancing resource use efficiency

Frontiers in Marine Science
Warming is a key factor influencing the function of the structure and function of phytoplankton communities. However, the impacts of temperature on phytoplankton resource use efficiency (RUE) in mountain rivers remain poorly understood.
Li Ji, Huayong Zhang, Huayong Zhang, Zhongyu Wang, Yonglan Tian, Wang Tian, Zhao Liu   +6 more
doaj   +1 more source

Temperature and species richness effects in phytoplankton communities [PDF]

Oecologia, 2012
Phytoplankton play an important role as primary producers and thus can affect higher trophic levels. Phytoplankton growth and diversity may, besides other factors, be controlled by seasonal temperature changes and increasing water temperatures. In this study, we investigated the combined effects of temperature and diversity on phytoplankton growth.
Schabhüttl, Stefanie, Hingsamer, Peter, Weigelhofer, Gabriele, Hein, Thomas, Weigert, Achim, Striebel, Maren   +5 more
openaire   +2 more sources

Using physics‐informed neural networks to quantify submarine groundwater discharge under high‐frequency tidal dynamics using heat as a tracer

Limnology and Oceanography: Methods, EarlyView.
Abstract Estimating exchange rates of submarine groundwater discharge (SGD) at high temporal resolution over extended periods remains challenging, particularly when using heat as a tracer in highly dynamic environments such as tidal systems. Currently available heat transport models struggle to accurately quantify SGD exchange rates in these settings ...
S. Frei, M. U. Munir, A. M. Seiverth, B. S. Gilfedder   +3 more
wiley   +1 more source

Spatial distribution of rare and common phytoplankton taxa is controlled by geospatial and physicochemical variables

Ecosphere
Phytoplankton are commonly used as an ecological tool in assessing water quality and indicating ecosystem health. The purpose of this study was to explore the effects of geospatial and physicochemical variables on variation in phytoplankton community ...
Jasmine K. Stovall, Caleb J. Robbins, Felicia S. Osburn, Isabelle M. Andersen, Chris Adams, Julie Chambers, Monty Porter, J. Thad Scott   +7 more
doaj   +1 more source