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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 14h

Hydrology Paper of the Day @sicbjournals.bsky.social on linking environmental change to homeostatic parameters in the context of environmental fitness: environmental stress and considering system networks; examples from euryhaline fish and range of salinity; and a framework for guiding research.

SICB journals @sicbjournals.bsky.social · 7d

ICB
A Systems Approach to #Homeostasis:
What Euryhaline #Fish #Teach Us About #Organismal #Stress Responses
Mauro, Velotta @cam-g.bsky.social

doi.org/10.1093/icb/...

#biology #physiology #osmoregulation #ecology #endocrinology #evolutionary #science

When external salinity increases, euryhaline fish try to maintain constant internal osmotic pressures (homeostasis) by altering their osmoregulatory sub-PRN to intake more water and excrete excess ions. Above is a schematic highlighting some (not all) of this homeostatic response. Osmosensors in the gut, gills, and brain detect internal changes in osmotic pressure, which leads to a endocrine response. Highlighted here are two hormonal responses stemming from the Hypothalamus-Pituitary-Interrenal axis: (1) ACTH released from the pituitary stimulates the release of cortisol (CORT) from the interrenal into the bloodstream, and (2) GH is released into the bloodstream from the pituitary. CORT and GH then bind to receptors in the gill, which triggers the hypo-osmoregulatory function of the gills: the proliferation of saltwater type ionocytes. These ionocytes then sense osmotic changes and excrete excess ions via ion transporters (see text for specifics). Hence, although the gill, brain, and gut form their own trans-organ sub-PRN, each organ itself also contains a smaller sub-PRN, and communication between the tissues is facilitated by the neuroendocrine system (connection between the brain and gill). Depending on the severity of the (salinity) stress and the makeup of the individual’s sub-PRNs, which is determined by the individual’s genotype to phenotype map, the fish will enter one of 4 zones of stress: Optimal, Pejus, Pessium, Lethal. These zones are described in detail in Fig. 2, and the behavioral consequences are highlighted here. Depending on the zone, an individual will either engage in: fitness increasing tasks like reproduction (baby fish), behavioral regulation to reduce stress (circular arrows), or fleeing the environment (left pointing fish). Artwork by Emily Tarnawa..."

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 1d

[email protected]

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 1d

Hydrology Paper of the Day @sternarchella.bsky.social on evolution of icefish skulls in Antarctica's Southern Ocean: modularity indicative of ecological opportunities; micro-CT scans showing how species split their jaws into evolutionary modules; and the effects of ocean currents and glaciation.

Kory Evans Ph.D @sternarchella.bsky.social · 8d

New paper alert!!!🚨 in our new study we find that Antarctic icefishes added a new module in their skulls during their adaptive radiation special shout out to @mayaranevesbio.bsky.social who led this project!

www.pnas.org/doi/10.1073/...

PNAS

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

www.pnas.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 2d

Hydrology Paper of the Day
@shojiwan.bsky.social
on flooding of subtropical streams in the Southern Hemisphere: understanding when and where rivers flood; the influence of hydrology and location; quantitative identification of bankfull stage; regional models; and geomorphology limitations.

Ryan Shojinaga @shojiwan.bsky.social · Apr 18

If you're in the Southeast Queensland, AUS, area and need to know (about) how much water might be required before a river starts to flood in any random location, check out my very first journal article.

#science #flooding #hydrology #queensland

The effects of climate and geomorphology on bankfull conditions in subtropical Australian streams

Southeast Queensland (SEQ), Australia.Bankfull conditions are used to derive stream properties, such as bankfull discharge and interval of recurrence,…

www.sciencedirect.com

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 3d

Hydrology Paper of the Day @akoshkin.bsky.social @hydro-adrienne.bsky.social on how wildfires affected by climate change remove trees and also affect snowpack hydroclimatology: changes in annual snow disappearance date related to location, radiation, temperature, elevation, and time since burn.

Adrienne Marshall @hydro-adrienne.bsky.social · 20d

Super excited to have this work out showing how snowmelt timing changes in burned forests across the west. Big congrats to @akoshkin.bsky.social on leading this! 🎉

Arielle Koshkin @akoshkin.bsky.social · 20d

Our latest research on fire impacts on snow melt timing across the Western US was just published in @aaas.org Science Advances. Read here: www.science.org/doi/10.1126/...

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 4d

Hydrology Paper of the Day @billingslab.bsky.social @hydrolejo.bsky.social on how cropland, root zone processes, vegetation and soil pedon changes affect soil structures below the plowline: root density, changes in ped sizes and quantifying differences by the second derivative of structural metrics.

Sharon Billings @billingslab.bsky.social · 5d

We are so excited to share the results of this work! Annalise Guthrie’s hard work demonstrates how the loss and regeneration of deep roots can change the way deep soils are structured at a continental scale. This was such a joy to work on! @agu.org
agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Deep Root Loss and Regeneration in the Anthropocene Drive Continental‐Scale Changes in Deep Soil Structure

Deep root dynamics imposed by land-use change are modifying deep soil structure at the continental scale well below zones of tillage As deep roots disappear, structural unit size increases and ro...

agupubs.onlinelibrary.wiley.com

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Reposted by KinarNicholas.bsky.social

David E Shannon @davideshannon1.bsky.social · Aug 16

The cascading water brings stories gathered from nature pooling into the calm below.

If we could listen, what would they tell us?

#vsspic

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 5d

Hydrology Paper of the Day @ucdavisplants.bsky.social on how drought is related to land use for rice crops in California: drivers and economics; remote sensing, soils and spatiotemporal changes; fallow fields and changes in crop types; and linkages examined by machine learning.

UCDavisPlants @ucdavisplants.bsky.social · 6d

🌾From Field Crops Research: Drought reduced rice acreage while high crop prices drove a shift to water-intensive orchards, revealing how economics can outweigh water constraints. (Luke A. Salvato, Cameron Pittelkow, Bruce A. Linquist)

▶️ www.sciencedirect.com/science/arti...
#PlantScience

Multifactor analysis of land use transitions in a drought-affected rice region

Rapid land use change can have large impacts on water resources, local economies, supply chains, and the environment. Understanding the complexity of …

www.sciencedirect.com

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 6d

Hydrology Paper of the Day @amardeeptiwari.bsky.social on how models of water storage on a global scale underestimate the spatiotemporal processes of droughts: discrepancies in the tropics and high latitude locations; comparisons with GRACE data products; and model performance in river basins.

Amar Tiwari @amardeeptiwari.bsky.social · 8d

New paper out in @agu.org Geophysical Research Letters (GRL): "Underestimation of Historical Terrestrial Water Storage Droughts in Global Water Models"

Read here: doi.org/10.1029/2025...

#Hydrology #WaterResources #TWS #droughts #Water #Modeling #GRACE

@yadupokhrel.bsky.social

Droughts are intensifying under climate change, making accurate prediction more critical than ever. In our new paper ‘Underestimation of Historical Terrestrial Water Storage Droughts in Global Water Models’ in AGU Geophysical Research Letters (GRL), we conducted the first global evaluation of how well global water models (GWMs) capture terrestrial water storage droughts compared to observations.

Key Findings:
1) GWMs systematically underestimate drought severity and spatial extent, particularly in North America, South America, Africa, and Northern Asia.
2) The underestimation is more pronounced in recent years (2016–2019).
3) Soil moisture errors and limited representation of human interventions (e.g., groundwater extraction, irrigation, reservoir operations) are major drivers of these gaps.

Future projections of water scarcity and drought risk may be more severe than currently estimated, underscoring the urgent need to improve models for better climate adaptation and water resource management.

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 7d

Hydrology Paper (Book) of the Day @princetonupress.bsky.social on rivers in the context of processes, history and human experiences: landscapes, water, and the importance of geology; the geography of drainage patterns and places; and a memoir related to how research affects the lives of researchers.

Princeton University Press @princetonupress.bsky.social · 12d

When we look at a river, what are we really seeing?

In Following the Bend, Ellen Wohl takes readers on a majestic journey by water to find answers, along the way shedding light on the key concepts of modern river science.

Out now (4 Nov UK pub): press.princeton.edu/books/hardco...

Following the Bend: How to Read a River and Understand Its Nature by Ellen Wohl. An engaging and thought-provoking introduction to river science.

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Reposted by KinarNicholas.bsky.social

RachelbC 🌎🚀🛰️🔭💫🧪 @rachelbc.bsky.social · 8d

Potential project ideas for #lake participatory science projects?

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 8d

Hydrology Paper of the Day @freshwaterau.bsky.social and colleagues on a survey of important questions in lake ice research: the need for data collected during the winter season; integrating remote sensing data with process-based models and measurements; and communicating scale-related challenges.

AU Freshwater Ecology @freshwaterau.bsky.social · May 15

What do we and what don't we know about what's happening in lakes under the ice cover? Together with colleagues from all over the world, we drafted 100 open questions for lake ice research, inspiring!

doi.org/10.1029/2024...

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 8d

Hydrology Paper of the Day @freshwaterau.bsky.social and colleagues on a survey of important questions in lake ice research: the need for data collected during the winter season; integrating remote sensing data with process-based models and measurements; and communicating scale-related challenges.

AU Freshwater Ecology @freshwaterau.bsky.social · May 15

What do we and what don't we know about what's happening in lakes under the ice cover? Together with colleagues from all over the world, we drafted 100 open questions for lake ice research, inspiring!

doi.org/10.1029/2024...

One‐Hundred Fundamental, Open Questions to Integrate Methodological Approaches in Lake Ice Research

We formulated 100 questions to progress primary research methods of lake ice research: in situ, satellite remote sensing, and modeling We described avenues to integrate the primary methods and in...

doi.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 9d

Hydrology Paper of the Day @catchmentsci.bsky.social on robustly determining river surface velocity in an automated fashion: data from a bridge on the River Dart (England); oblique camera angles and calibration; a combination of theory and empirical information; and quantifying uncertainties.

CatchmentSci @catchmentsci.bsky.social · Aug 14

I’m delighted to share that our latest research has just been published in HESS.

We developed an unsupervised workflow to estimate river surface velocities from videos. Testing on 11,000+ videos against 274 gauging measurements showed excellent agreement.

hess.copernicus.org/articles/29/...

Unsupervised image velocimetry for automated computation of river flow velocities

Abstract. Accurate, long-term measurements of river flow are imperative for understanding and predicting a broad range of fluvial processes. Modern technological advances are enabling the development ...

hess.copernicus.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 10d

Hydrology Paper of the Day @cchartierrescan.bsky.social on how snowpack directly influences low levels of streamflow in the Alps: upstream to downstream processes in 207 catchments; a novel daily standardized SWE index; linkages and rates of propagation; trends, drought identification, and geography

HYCLIMM - Hydrology & Climate Impacts Group @hyclimm.bsky.social · Aug 27

🤩New paper from our team member @cchartierrescan.bsky.social entitled 'Snow drought propagation and its impacts on streamflow drought in the Alps' published on Environmental Research Letters! Big congrats! Check out more details here: iopscience.iop.org/article/10.1...

#ClimateChange #Hydrology

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 11d

Hydrology Paper of the Day @rachelglade.bsky.social on why the Finger Lakes in Western New York have geomorphological variability: mathematical models demonstrating that bedrock lithology is more important than ice sheet dynamics, and capturing glacier dynamics and mass balance.

Rachel Glade @rachelglade.bsky.social · 13d

We had a great experience publishing with @geomorphica.bsky.social! Using a simple glacial erosion model, recent undergrad Div Patel found that lithologic differences alone may be enough to explain size differences of the Finger Lakes in Western, NY. Check it out! journals.psu.edu/geomorphica/...

When ice meets bedrock: variation in regional lithology as a control on the size variation of the Finger Lakes in Western New York | Geomorphica

journals.psu.edu

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 11d

Thanks for the great paper @lireactivewater.bsky.social!

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 12d

Hydrology Paper of the Day @lireactivewater.bsky.social on deep learning to model and infill river water temperature data to provide a better understanding of heat waves in rivers: riverine heat waves last longer than air heat waves, and showing linkages with climate change in the Anthropocene

Li Li 李黎 @lireactivewater.bsky.social · 13d

Rivers are heating up faster than the air − that’s a problem for aquatic life and people

doi.org/10.64628/AAI...

www.pnas.org/doi/10.1073/...

Rivers are heating up faster than the air − that’s a problem for aquatic life and people

River heat waves are rising faster than the pace of air heat waves. That’s a problem for fish, drinking water quality, and food and energy production.

doi.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 13d

Hydrology Paper of the Day @jlbamber.bsky.social on why machine learning should be implemented in a manner to ensure physically-accurate constraints and processes: the PaML framework of methods; extracting hypotheses and insights; how to integrate theory and practice; and an overview of applications

Jonathan Bamber @jlbamber.bsky.social · 23d

New ML hydrology benchmark datasets, code zoos and case studies just published by my colleagues at TUM. Super useful resource for anyone working on hydro-ML. All open source: www.sciencedirect.com/science/arti...
hydropml.github.io
github.com/HydroPML

Physics-aware machine learning revolutionizes scientific paradigm for process-based modeling in hydrology

Accurate hydrological understanding and water cycle prediction are crucial for addressing scientific and societal challenges associated with the manag…

www.sciencedirect.com

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 13d

I've conducted research on signal processing and parameter tuning, so this is a very interesting paper indeed!

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 14d

Hydrology Paper of the Day @sajadsayadi.bsky.social on modifying the Enhanced Vegetation Index (EVI) by application of particle swarm optimization: site-specific and regional calibration applied to the Zagros mountains of Iran; application of Sentinel 2 data; and capturing additional variability.

Sajad Sayadi @sajadsayadi.bsky.social · 16d

‪Sajad Sayadi‬
Classic NDVI can be fuzzy over bright soils and sparse canopies. We re-parameterized EVI with PSO for semi-arid mountains on Sentinel-2.
Have you tried scene-specific EVI tuning?

#RemoteSensing #EVI #Vegetation #Indexes #PSO #Sentinel2

See more details here👇 doi.org/10.1109/Metr...

NDVI (left) vs PSO-tuned EVI (right) in semi-arid mountains; the optimized EVI produced a wider vegetation value range, higher variance, and mapped more vegetation pixels than NDVI and the conventional EVI.

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 15d

Hydrology Paper of the Day @acstone.bsky.social on water stress and human adaptations: nomadic subsistence pastoralism in east Africa as a water-limited environment; diet, biomarkers and genes; the role of lifestyle, water, culture, and environmental factors; and the prevalance of lifestyle shifts.

Anne Stone @acstone.bsky.social · 18d

Adaptations to water stress and pastoralism in the Turkana of northwest Kenya | Science www.science.org/doi/10.1126/...

Adaptations to water stress and pastoralism in the Turkana of northwest Kenya

The Turkana pastoralists of Kenya inhabit arid, water-limited environments and rely largely on livestock for subsistence. Working with Turkana communities, we sequenced 367 whole genomes and identifie...

www.science.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 16d

Hydrology Paper of the Day @drevaplaganyi.bsky.social on fisheries management and harvest strategies to ensure ecosystem functionality and services: the need for frameworks with the concept of key species; indicators and benchmarking reference levels; and understanding decisions within frameworks.

Dr Eva Plaganyi @drevaplaganyi.bsky.social · Jul 11

New paper 🐟🦑🦞🪼🐋 encouraging greater operationalisation of ecosystem- based #fisheries management and ways to account for trophic interactions. With @laurablamey.bsky.social and @csiro.bsky.social colleagues working on #EBFM #MICE link: doi.org/10.1111/faf.... thread 1/3..

Towards Implementing Multispecies Harvest Strategies That Are Robust to Interacting Populations

To advance the implementation of fisheries management that is robust to interacting populations (RIP), ecosystem management approaches can be structured using four main categories: (A) whole-of-ecosy...

doi.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 17d

Hydrology Paper of the Day @mlearthsciences.bsky.social on linkages between rainfall and landslides as predicted by machine learning: investigating how ANNs demonstrate a geography of risk; comparisons with known areas of landslides; and application to the Serra Geral region of southern Brazil.

ML Earth Sciences @mlearthsciences.bsky.social · 17d

Spatially distributed antecedent rainfall thresholds for landslide occurrence: a multitask machine learning modelling approach

doi.org/10.1080/0262...
#machinelearning #landslide

Spatially distributed antecedent rainfall thresholds for landslide occurrence: a multitask machine learning modelling approach

Landslide susceptibility and the amount of antecedent rainfall required to trigger landslides are conceptually tightly linked but usually modelled separately. We propose an approach for modelling b...

doi.org

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Reposted by KinarNicholas.bsky.social

Eos @eos.org · 19d

Avast ye! It’s #TalkLikeAPirateDay, so we’re combining two passions—minerals + pirate speak—and voting for barrrrrrrrite! #MinCup25

Mineral Cup #MinCup25 @mineralcup.bsky.social · 19d

#MinCup25 Round 2 Match 3: It's a heavyweight match between industrial powerhouses as soft #baryte competes against rusty red #hematite.

Vote: www.mineralcup.org/2025/vote/r2...
Results: www.mineralcup.org/2025/results...

Vote in Round 2 Match 3 — Mineral Cup

Click here to vote in Baryte vs Hematite Photo credits:

www.mineralcup.org

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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 18d

Hydrology Paper of the Day @andy-baker.bsky.social on how surface fire affects groundwater recharge due to rainfall in a karst cave situated in New South Wales, Australia: drip loggers utilized to quantify recharge and a model of how fractures, ash, vegetation and soil affects water inputs.

Andy Baker @andy-baker.bsky.social · 24d

New paper alert led by Christina Song & Micha Campbell

Working at Wombeyan Caves, we identified potential recharge events by logging cave drip water in a shallow cave

During our monitoring, an intense fire occurred above the cave. Find out what happened here...

andy-baker.org/2025/09/14/u...

Understanding Groundwater Recharge: Impact of Rainfall and Fires

Groundwater can be replenished by rainfall that percolates from the surface to the water table. The amount of rainfall that is needed to generate this groundwater recharge is hard to measure. We de…

andy-baker.org

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