The amount of rain that falls affects our environment in various ways, from river flow to the availability of freshwater, but it can also shape the diversity and distribution of ecosystems within different regions of the globe.
A new long-term study of Seychelles warblers (Acrocephalus sechellensis) on Cousin Island has revealed that rainfall during the breeding season can affect “divorce” rates between the birds, highlighting the complex effects climate change can have on animal reproduction and conservation.
The study, conducted on a closed Seychelles warbler population, uncovered major findings on how rainfall and other environmental factors can negatively affect the stability of pair bonds in birds, a press release from Macquarie University said.
“This instability can occur because of the effects rainfall patterns have on the ecological environment of the warblers, where rainfall influences food availability, and nest/habitat conditions, all of which can affect the health of the birds before and during the breeding season and affect their ability to produce offspring,” A. A. Bentlage, a researcher in the School of Biological Sciences at Australia’s Macquarie University, told EcoWatch in an email.
Seychelles warbler pairs tend to stay together in favorable weather. Charli Davies
For species like the Seychelles warbler, who are socially monogamous, “divorce” refers to the breaking up of a pair bond when both individuals are still living. The mating strategy of pair bonding, observed in various species, has often been associated with lower reproductive success, or the number of offspring they produced as a pair.
Social monogamy implies that birds form a pair bond and spend many years — even lifetimes — with the same partner. Birds in these partnerships typically live and raise their young together, but they are not always sexually monogamous.
The relationship between divorce and environmental factors — especially fluctuations in climate — is still poorly understood.
“We analyzed 16 years of data from a longitudinal dataset to examine the influence of rainfall on the prevalence of divorce and the possible underlying mechanisms. First, we performed climate window analyses to identify the temporal windows of rainfall that best predict reproductive success and divorce. Then, we tested the effects of these temporal windows of rainfall on reproductive success and divorce and the influence of reproductive success on divorce while controlling for covariates using generalized linear mixed models,” Bentlage told EcoWatch.
The study, “Rainfall is associated with divorce in the socially monogamous Seychelles warbler,” was published in the Journal of Animal Ecology.
“We… found a complex, non-linear relationship between rainfall patterns and divorce rates, with divorce being more likely during years of both low and high rainfall,” said Frigg Speelman, a member of the science and engineering faculty at Macquarie University, in the press release. “This relationship was notably influenced by an extreme climatic event — the 1997 El Niño-induced rainfall spike.”
The researchers found a correlation between the extreme rainfall associated with the 1997 El Niño event and divorce rates of the Seychelles warbler. However, when they excluded this exceptional event from their analysis, it became clearer that there was indeed a negative relationship between rainfall amounts and the birds’ divorce rates.
The study did not find any direct link between the reproductive success of the birds and divorce likelihood, however, which suggested that there may be other factors influencing partnership stability.
Bentlage said rainfall extremes have a significant effect on the food sources and habitats of the Seychelles warbler.
“Extreme rainfall can greatly affect the ecological environment of our study population. For example, low rainfall significantly diminishes food availability by disrupting the development of insects that often lay their eggs in water, and heavy rainfall can destroy habitats/nests and make maintaining optimal body temperatures difficult for birds. Therefore, both rainfall extremes can impact the birds’ health and make raising offspring difficult,” Bentlage told EcoWatch.
The researchers found that the highest divorce rates occurred in years with extremely high or low rainfall occurring during breeding season, possibly affecting how the birds viewed their partners.
“Whereas divorce in many species is often correlated with poor reproductive success, our study found no evidence for this in the Seychelles warbler, suggesting that other, more complex factors may be involved. For example, the aforementioned rainfall effects may cause an increase in stress for the birds, increasing the instability of their partnerships as they associate the stressful period – that was caused by extreme weather – with their partner. Thus, extreme rainfall could misinform these birds about the quality of their partner, causing them to reconsider their choice of partner and separate,” Bentlage said.
The study builds on mounting evidence demonstrating how environmental factors — especially those associated with climate change — can have a direct effect on the reproductive strategies and social dynamics of wildlife.
The Seychelles warbler is a native species of the Seychelles islands. The rare birds are already facing a number of conservation challenges, which make the study particularly relevant. The findings of the research suggest the species could experience further stress to population stability and reproductive success due to environmental changes.
“As climate change intensifies, it is critical to understand how fluctuations in environmental conditions, such as rainfall, affect the stability of socially monogamous species,” Speelman said in the press release. “This research not only enhances our understanding of animal behavior in the face of climate variability but also provides valuable insights that could inform conservation efforts for species vulnerable to the effects of climate change.”
What other environmental changes and stressors are Seychelles warblers facing due to climate change?
“The Seychelles warblers are a great conservation success story as they were once on the brink of extinction, with just 26 individuals left in the world. After Cousin Island and the surrounding sea became a nature reserve in the 1960s/70s the population bounced back to stable numbers. Thus, they are doing quite well at the moment. Nevertheless, as a result of climate change, extreme rainfall events are predicted to become more prevalent and alongside them, other stressors such as extreme winds may also become more of an issue. Wind can influence territory quality on Cousin because wind-driven onshore salt spray negatively affects vegetation. Thus, habitat destruction that influences territory quality/food abundance may become more prevalent in a changing world,” Bentlage told EcoWatch.
Bentlage said the research team does not know how divorce driven by rainfall extremes will impact Seychelles warblers in the long-term, but once that is understood it could help improve future conservation efforts.
“We do not yet understand whether rainfall-driven divorce in the Seychelles warbler is adaptive, maladaptive, or has no effect on short/long-term reproductive fitness. As we discuss in our paper, it is essential to investigate the fitness consequences of divorce in the context of these extreme environmental effects to understand to what extent plasticity in breeding behavior may enable socially monogamous species to adapt to a rapidly changing world,” Bentlage explained. “Once that is understood, combined with our current knowledge of the negative effects of extreme rainfall on reproductive success, our findings can greatly inform population modeling and monitoring, such as using environmental indicators as early warning signals for potential declines in population stability. Also, for some species, such knowledge may even inform habitat management and conservation approaches that have specific climate change adaptations in mind. For example, efforts could be made to protect habitats or create refuges that provide optimal conditions during poor climatic periods.”
The post ‘Divorce’ Rates of Seychelles Warblers Linked to Rainfall Fluctuations During Breeding Season appeared first on EcoWatch.
https://www.ecowatch.com/seychelles-warblers-divorce-rainfall-fluctuations.html
As a longtime book lover, I may be biased, but I think a full bookshelf is one of the most beautiful additions to a space. There’s nothing better than seeing a showcase of your favorite reads alongside a TBR list.
A bookcase, though, can of course be used for all sorts of purposes from placing your favorite photos of family and friends to showcasing treasured vintage finds.
Whatever the case, this guide will help you find the right sustainable bookshelf for your living room, office, or wherever you like to cozy up with a good read!
So what make a bookcase more sustainable? What makes a bookshelf non-toxic?
First of all: sustainable and non-toxic are two overlapping — but distinct — criteria. And both of those terms can come with a lot of opinions and varying definitions.
When it comes to sustainable bookcases, I look for:
- Responsibly Sourced Materials: most bookshelves are made primarily with wood. While natural, unsustainable wood sourcing can be a cause of deforestation, so we want to see that the wood was from responsibly managed forests or made from reclaimed or repurposed wood. Some bookshelves may feature metal, in which case recycled materials here are important.
- High Quality Construction: sustainability includes longevity — how long will you be able to use that furniture piece before it goes to the landfill and gets replaced? Look for transparency around craftsmanship and woodworking processes. Another sign of quality is the length of warranty a company has for its products.
- Ethically Made: this one is straightforward in theory — were the people making it paid fairly and working in safe conditions? — but is unfortunately not always easy to find information. In this category, I look for transparency in practices, what relationship the brand has with the manufacturer (some produce in-house which is the best case scenario for transparency!), where it was made, and how well the makers were paid.
Ideally a sustainable bookshelf would also be non-toxic — as toxic chemical fumes aren’t exactly sustainable! But this isn’t always the case. For example, if a company prioritizes upcycled materials, they don’t necessarily have control over what inputs were part of the original materials. And sometimes a company focuses more on ethical artisan partnerships and sustainable wood sourcing, more than, say, using non-toxic finishes.
But when it comes to non-toxic bookshelves, this is what I look for. (Note that non-toxic doesn’t necessarily mean safe for all chemical sensitivities. Nor does it mean zero potentially irritating chemicals.)
- Solid Wood (where possible): MDF or pressed wood contains glue to stick the various wood pieces together, which can contain added formaldehyde. I prefer solid wood, or if it is engineered wood, I’d make sure the company is transparent around the type of glue used and/or they at least have a product certification like GREENGUARD. (More on that in a second.)
- Low or Zero VOC Finishes: most wood furniture is completed with some sort of finish to provide a protection against scratches or moisture. Many of these finishes are synthetic, and some can contain high levels of toxic chemicals. Look for a natural finish like linseed oil or beeswax or a low VOC synthetic finish.
Relevant Certifications
You’ll see a few certifications referenced throughout this guide. Here’s what each one covers:
- FSC Certified = the wood sourcing was responsibly managed; this is not a finish, foam, or textile guarantee.
- GREENGUARD / GREENGUARD Gold Certified = the finished product was tested for low chemical emissions, including VOCs, with Gold representing the stricter tier.
- Fair Trade Certified
= verifies that a factory meets standards for fair wages, safe working conditions, and ethical labor practices. - Cradle to Cradle Certified (Gold) = evaluates a product or material across material health, circularity, clean air/climate, water/soil stewardship, and social fairness.
Where to Find Sustainable Bookcases and Shelving
I’m always a secondhand first proponent, and that goes for furniture, too. While your local thrift store might not have used bookshelves, check for dedicated furniture resale shops near you or estate sales. (I use EstateSales.net to find ones near me.) You can also find gently used pieces on online marketplaces like Facebook Marketplace, OfferUp or AptDeco.
If you can’t find something you love secondhand, and you don’t want to DIY your own bookshelf, then the next best choice is to shop from one of the sustainable furniture companies below. (If you’re simply looking for a bookstand, I’d suggest browsing Etsy for a collection of solid wood, bamboo, and reclaimed wood book stands and cookbook stands!)
Note that this guide includes affiliate links, which means we may earn a small commission if you purchase through these links which helps us continue to run this website and create resources like these. As always all brands meet strict sustainability criteria and are brands we love — and that we think you’ll love too!
1. Medley
Best for: low VOC wood bookcases
Medley’s bookshelves are elegant and elevated, perfect for a living room. Each piece is made with 100% solid FSC-certified hardwood for the tops and sides, though low-VOC CARB 2 compliant plywood is used for the shelves.
Every eco-friendly bookcase is handcrafted in the US (California or North Carolina) and completed with a low-VOC wood finish.
Price: $2,395 – $2,995
Materials: White Maple, American Walnut Wood
Conscious Qualities: Made-to-Order, US-Made, FSC-Certified Wood, Natural Finish
2. Thuma
Best for: non-toxic modular bookshelf
Thuma’s eco-friendly bookshelf is made from upcycled wood sourced from rubberwood trees no longer being used to source rubber. The brand’s bookshelf is also GREENGUARD Gold certified.
What makes Thuma’s bookshelf stand out to me, though, is its modularity — their Pillar Bookshelf can be set in 10 different configurations. And if you start with just a few shelves but later decide you want a larger bookshelf, you can simply buy an additional shelf or two to add on to it!
Price Range: $550 – $3,300
Materials: Upcylced Rubber Wood
Conscious Qualities: GREENGUARD Gold Certified, Repurposed Materials, Adaptable
3. West Elm GREENGUARD Certified
Best for: low-tox bookcases and bookracks for kids
This furniture retailer has plenty of adorable, but functional, bookshelves for a playroom or kids’ bedroom. From cubby bookcases to mid-century bookracks, you’ll find plenty of options that are not only GREENGUARD certified, but made in Fair Trade Certifiedfactories, and/or with FSC-certified wood. Note that the company’s bookshelves are made with engineered wood, though.
West Elm also has GREENGUARD certified bookcases large enough for the adults too!
Price: $399 – $2,897
Materials: Solid Wood, Reclaimed Wood
Conscious Qualities: Fair Trade, FSC Certified, and GREENGUARD Certified Options
4. Urban Natural
Best for: a variety of eco-friendly bookshelves
This natural home retailer has sustainable bookcases in all shapes and sizes. From traditional bookcases to open-back asymmetrical shelving units, Urban Natural has options for any interior aesthetic. Each brand they carry values quality craftsmanship, responsible production, and sustainable sourcing.
Price: $1,099 – $5549
Materials: Solid Teak, Maple, Cherry, Walnut, Birch (varies by brand)
Conscious Qualities: FSC-Certified Options, USA-Made Options, Low VOC Finish Options (varies by brand)
5. MasayaCo
Best for: sustainably-sourced wood bookshelves
MasayaCo has a stunning collection of sustainable shelves and bookcases handcrafted by artisans in Nicaragua. Not only is each piece of furniture made from responsibly harvested wood, but MasayaCo plants 100 trees for each order — and has planted 1.3 million trees to date. Plus they keep 40% of the reforestation projects completely untouched, to ensure the ecosystems have the chance to truly thrive.
The company shares that with the right care, their teak wood pieces can last up to 75 years. Note, though, that the finishes used aren’t disclosed, so if that’s one of your priorities, this might not be the top pick for you.
Price: $675-$1,295
Materials: Teak
Conscious Qualities: Artisan Made-to-Order, Reforestation Projects, FSC-Certified
6. Healthier Homes
Best for: affordable non-toxic bookshelves
With shelving options starting at under $250, Healthier Homes is a more affordable option for finding sustainable, non-toxic bookcases and shelving.
Most of their wood furniture is made from Parawood, rescued from rubber tree farms after the trees stop producing latex. And their wooden bookcases come unfinished, so you can have full control over the color and any chemicals used. (The company also sells zero VOC furniture paint.)
Price: $238 – $2,160
Materials: Repurposed Wood, Metal, Zero VOC Finishes
Conscious Qualities: Repurposed Materials
7. What We Make
Best for: reclaimed wood bookshelves
Illinois-based furniture company What We Make crafts non-toxic bookcases with a VOC-free finish.
The shop offers both modern Scandinavian styles (pictured here) using solid oak and industrial style sustainable bookshelves made with a stainless steel frame and the reclaimed wood salvaged from 100+ year old Midwestern barns.
Price: $2,025 – $5,055
Materials: Oak, Reclaimed Wood
Conscious Qualities: Made-to-Order, Repurposed Material Option, Zero-VOC Finish
8. Greenington
Best for: bamboo bookshelves
Greenington is a furniture company with pieces crafted from sustainably hand-harvested Moso bamboo. Greenington sources mature bamboo — reached in just 5 years — for maximum strength and durability. And because bamboo is technically a grass, not a tree, it regenerates after being cut without any replanting.
The company uses every part of the bamboo culm, for zero waste production, winning the Sustainable Furnishings Council Green Ribbon Award in 2020.
Price: $809 – $2,139
Materials: Moso Bamboo
Conscious Qualities: Zero-Waste Production, Sustainable Materials
9. Crate & Barrel FSC-Certified
Best for: certified responsibly sourced wood shelving
Crate & Barrel’s FSC-Certified collection features bookshelves made with materials like solid oak, mahogany wood, teak, and rattan. And you can find a range of styles and finishes in their collection, from natural oak to espresso and driftwood.
It’s worth noting that the company’s bookshelves do contain veneer and engineered wood as well. There are also select products that are also GREENGUARD certified, but not all of them.
Price: $1,399 – $4,949
Materials: FSC-Certified Wood, Some GREENGUARD Certified Pieces
Conscious Qualities: Natural Materials, Responsibly Sourced
More Guides to Browse:
Sustainable Tables and Coffee Tables to Gather Around
The Best Non-Toxic Furniture Brands for a Healthier Home
Sustainable Storage Furniture: Dressers, Media Consoles, and More
The post 9 Sustainable Bookcases to Showcase Your Latest Reads appeared first on Conscious Life & Style.
Put your feet up and relax with the eco-friendly and non-toxic ottomans, benches, and poufs from these incredible sustainable furniture brands.
What makes an ottoman, pouf, or bench sustainable?
There are a lot of considerations that go into making sustainable furniture. Some brands may meet more of these criteria than others, and some criteria may be more or less important to you.
You might also engage with sustainability differently depending on your lifestyle, budget, aesthetic preferences, among other factors. But here’s a general idea of what to look for:
Look Secondhand
Used ottomans and benches are going to the most sustainable option since these furniture pieces have already been produced! Plus you’re preventing that furniture from heading to a landfill. You could browse an app like OfferUp or check your local Facebook Marketplace.
You can also check secondhand furniture sites like AptDeco and Chairish
Shopping for new sustainably-made ottomans and benches? Check out the following tips:
Eco-Conscious & Durable Materials
With the rise of fast furniture, the quality (and the sustainability) of materials used in furniture has declined. I’m consistently blown away by the incredible condition of so much vintage mid-century modern (1930s-1970s) furniture out there!
A sustainable ottoman (or sustainable bench) would be made durably so it lasts and would be constructed from responsibly sourced materials such as FSC-Certified and/or locally sustainably-harvested wood, recycled fabrics and organic natural fabrics for the upholstery, and non-toxic — ideally zero VOC — finishes. This guide has more non-toxic furniture brands.
Responsibly Made
Look into where the brand is producing their ottomans, benches, and/or poufs. Is it in their own workshop or a nearby production facility? Is it in a fair trade artisan workshop? A brand should have full transparency and traceability of their supply chain.