Tag Archive for: habitat

The Soil is Alive!

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This is the second in a series of blog posts about soil.

We often think of soil as nothing more than “the dirt beneath your feet,” but soil is much more complex than that. There’s a whole other world of living creatures beneath our feet!

Soils provide habitat for a rich, dynamic ecosystem for organisms ranging from microscopic bacteria and protozoa, to fungi and plant roots, to insects, worms, mites, and other invertebrates, and even subterranean vertebrates like moles.

Most soil organisms live in the top few inches of soil, where oxygen and nutrients are most readily available, though a few microorganisms (like anaerobic bacteria) occur at lower depths.

Soil is more than just a home for these organisms, however. Many of these organisms can benefit the plant community growing above it by improving the availability of nutrients and organic compounds. Symbiotic bacteria known as Rhizobia, for example, can “fix” nitrogen from the air and convert it to a form that plants can use, in exchange for essential minerals and sugars supplied by roots of leguminous plants. Soil organisms that decompose organic matter also break down complex organic molecules into nutrients that plants can use.

Soil organisms affect plant growth in other ways. Tunneling creatures like moles and worms move the soil around, which aerates it, improves drainages, and creates easier routes for root growth. Some microorganisms can stimulate plant growth by releasing special hormones.

Sometimes soil organisms can negatively impact the plant ecosystem above. For example, subterranean herbivores like voles and white grubs can impact plant growth by feeding on roots, and soil pathogens like wilt-causing fungi can harm or kill plants. Fortunately these species are kept in check by other creatures higher on the food chain.

So the next time you plant your garden, you can thank all those soil organisms for helping your plants grow!

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Celebrate World Wetlands Day on February 2

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February 2 of each year is World Wetlands Day, which marks the date that the Convention on Wetlands (also known informally as the Ramsar Convention) was signed in 1971. World Wetlands Day provides private and public entities alike with the opportunity to raise awareness about the importance and value of wetlands.

Wetlands provide vital habitat to a number of species, including (but certainly not limited to) waterfowl, wading birds, frogs and salamanders, aquatic invertebrates, turtles, and fish. They also provide a number of essential ecosystem services like purifying our water, absorbing flood waters, and protecting coastal and riparian areas against erosion. Unfortunately, 64% of the world’s wetlands have been lost since 1900.

Voluntary efforts to manage wetlands and wetland-dependent species on corporate lands are invaluable for wetland conservation efforts, as well as in promoting wetland conservation within local communities. From vernal pool and wetland construction, to frog call surveys, to structural enhancements, WHC-certified programs around the world incorporate a wide range of conservation and education tools to further wetland conservation.

World Wetlands Day provides an opportunity to highlight the wetlands conservation work your program is already doing and raise awareness about the value of wetlands in your local community. There are numerous ways to celebrate World Wetlands Day at your site, even if your facility doesn’t have wetlands. The local community could be invited to help install native wetland plantings or artificial habitat structures for wetland species, or to participate in monitoring wetland birds or water quality. Even if you don’t have a wetland on site, you could use curricula like Project WET to educate young learners about wetland-related topics.

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This Year’s Christmas Tree, Next Year’s Habitat

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With the winter holiday season upon us and Christmas only a few days away, many living rooms and office lobbies are now decorated (or soon will be) with live evergreen Christmas trees. But once the holidays are over, what should we do with all of those trees?

I suggest using them to create habitat!

A post-holiday Christmas tree collection drive through a local school or community center is a great way to reach out to your local community and spread awareness about your habitat enhancement program, while also providing valuable brush for your projects.

As part of my Three Rs blog series a couple of years ago, I briefly mentioned using old Christmas trees in brush piles. Start by removing the branches from a few trees and using the trunks to create a base that lifts up the brush and provides space for wildlife to move around under cover. Intact Christmas trees or their brush can then be loosely piled on top. The needles can be left on the branches, as they will provide more cover and will be used by many birds for nest building in the spring. Creating these kinds of brush piles along the edge of your woodland or grassland will provide cover for small mammals, birds, reptiles, and amphibians to escape from predators, find shelter from the elements, and build nests and dens.

If you have a pond or lake, Christmas trees can also be used to create underwater cover for fish and aquatic invertebrates. You can tie together branches from the trees into a brush pile to be partially or fully sunk. Alternatively, you could sink single intact Christmas trees. Wood floats, so you’ll probably need to weigh the trees and brush piles down with a cinderblock.

It may seem obvious, but it’s still a very important to note: be sure to remove all decorations, including lights, artificial snow, ornaments, and tinsel, from the Christmas trees prior to using them in projects. These items will create litter that could harm wildlife and contaminate the water and soil nearby.

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Tag Archive for: habitat

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