Long-term Plankton Data
Long-term Plankton Data - Related Videos
08:15
Visualizing Oceanographic Data to Depict Long-term Changes in Phytoplankton
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2023
Here, we present a protocol for converting phytoplankton microscopic images into vector graphics and repetitive patterns to enable visualization of shifts in phytoplankton taxa and biomass over 60 years. This protocol represents an approach that can be utilized for other plankton time series and datasets globally.
11:47
Concentration of Metabolites from Low-density Planktonic Communities for Environmental Metabolomics using Nuclear Magnetic Resonance Spectroscopy
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Cited by 15 •
2012
A method for metabolite extraction from microbial planktonic communities is presented. Whole community sampling is achieved by filtration onto specially prepared filters. After lyophilization, aqueous-soluble metabolites are extracted. This approach allows for application of environmental metabolomics to trans-omics investigations of natural or experimental microbial communities.
01:05
Long-term Depression
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2019
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory. Calcium Ion Concentration Mechanism If over time, all...
03:41
In Vitro Calcium Imaging in Short-Term and Long-Term Rat Hippocampal Cultures
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2025
Source: Calvo-Rodríguez, et al. Fluorescence and Bioluminescence Imaging of Subcellular Ca2+ in Aged Hippocampal Neurons. J. Vis. Exp. (2015). This video demonstrates the use of fluorescence imaging to measure cytosolic calcium levels in short-term and long-term rat hippocampal cultures. By comparing young and aged neurons, it highlights how increased L-type voltage-gated calcium channel density and prolonged activation in aged neurons result in calcium overloading, a hallmark of neuronal aging.
09:58
C. elegans Positive Butanone Learning, Short-term, and Long-term Associative Memory Assays
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Cited by 99 •
2011
Here we describe methods to test C. elegans associative learning and short- and long-term associative memory. These population assays employ the worms abilities to chemotax toward volatile odorants, and form positive associations upon pairing food with the chemoattractant butanone. Increasing the number of conditioning periods induces long-term memory.
FAQs
Consistency in location and timing is what makes long-term plankton data useful for detecting change. Repeated observations create a reference against which seasonal fluctuations can be compared across years. Without that sustained, standardized record, an unusual plankton measurement is harder to interpret as either ordinary short-term variability or evidence of a persistent ecosystem trend.
These records connect plankton-community changes with environmental conditions such as temperature, nutrient availability, and water quality. Examining those relationships helps researchers interpret why abundance, diversity, distribution, or composition may shift over time. The comparison is especially valuable when assessing whether biological changes coincide with broader environmental change rather than treating each sample as an isolated observation.
Microscopy, automated imaging, and molecular identification provide different ways to characterize organisms within a time series. Using these approaches, researchers can compare plankton abundance, diversity, distribution, and composition across samples and years. The selected identification method therefore influences how communities are documented, while consistent application supports meaningful comparisons through the record.
Building a usable record begins with repeated sampling at consistent locations and intervals. Researchers then document plankton characteristics, including abundance, diversity, distribution, and composition, using microscopy, automated imaging, or molecular identification. Comparing the resulting observations across seasons and years reveals whether a pattern is temporary, recurring, or persistent.
Their greatest value is in showing how aquatic ecosystems change beyond a single season or sampling event. Long-term plankton data support ecosystem monitoring, climate-change assessments, fisheries management, and early detection of ecological disruption. The extended record provides context for evaluating biological patterns and relating them to changing environmental conditions.
For fisheries management, the main value lies in tracking plankton communities as part of the aquatic ecosystem over extended periods. The resulting time series can show changes in abundance, diversity, distribution, and composition, while comparisons with environmental conditions add context. This information supports management by revealing longer-term ecological patterns instead of relying on a single sampling event.