Discover and read the best of Twitter Threads about #drylands

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¿Puede una sequía ser capaz de retroalimentarse para extenderse?

Pues, en parte, sí😳
Esto se produce a consecuencia de diversas interacciones físicas entre la atmósfera y la humedad del suelo. (1/4)
La autopropagación de la sequía es más efectiva en aquellos lugares donde la precipitación es un factor limitante (#drylands).

Estas zonas abarcan en torno a un 40% del planeta y la mayoría de la península ibérica. También albergan a casi la mitad de la población. (2/4)
Cuando se consiguen 3 condicionantes, la desecación del suelo reduce la evaporación así como el suministro de agua y la saturación atmosférica.

Además, también se reduce la eficacia de las precipitaciones a partir de la alteración del calor sensible. (3/4)
Read 6 tweets
Thread/ #Wetlands may seem off-topic for an organisation based in #Africa's #drylands, but the protection & restoration of river ecosystems makes up a big part of our programmes at Tree Aid

Learn more this #WorldWetlandsDay 👇
2/When it does rain in the #Sahel, it often pours, leading to destructive flash floods, riverbank damage & #soilerosion. #Siltation is a major problem in the Sahel too, making rivers dry up quicker in the dry season, and flood faster in the rainy season too

#WorldWetlandsDay
3/ Our riverine projects work with local communities to restore & protect existing #trees along river banks, and adapt #farming methods to reduce siltation

Rivers & streams are a lifeline for these areas, and provide vital many services - read on to learn what we've been doing👇
Read 5 tweets
Excited to share our comment in @NatureFoodJnl doi.org/10.1038/s43016… (free to read 👉 rdcu.be/caBrA) Here we discuss the environmental costs of discarding food before entering the market in water-limited #drylands Want to know +? Keep reading👇1/12 #ZeroHunger #SDG2
1/3 of the food produced globally is not consumed, of which approximately 14% corresponds to post-harvest loss fao.org/3/ca6030en/ca6… In most high-income countries, the primary reason for this is to control prices
This discarded food is often produced unsustainably, contributing to the depletion of resources such as water & fertilizers and to #climatechange by emitting CO2 Despite this, the EU subsidies this practice to compensate farmers for losses associated with price fluctuations
Read 12 tweets

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