November 20, 2017
Great Ecology is pleased to announce that Associate Ecologist Emily Callahan, and Ecologist Amber Jackson, were named as part of Forbes’ 30 Under 30 in Energy. Emily and Amber are co-founders of Blue Latitudes, which works with oil companies to transform their offshore oil platforms into environmentally beneficial artificial reefs. We’re proud to have them on our team—and of all the work they do to make the world a better place.Leave a comment
October 26, 2017
By: Liz Clift
Not too long ago, sand cat kittens were filmed for the first time, and the internet went gaga over the brief video—especially the portion of the internet that’s convinced the internet is for cats.
So, I pose this question to you: what could be better than cats wearing snowshoes?
Yes, these exist.
Well, sort of.
Canada lynx (Lynx canadensis) are a member of the cat family that lives primarily in boreal forests that receive high levels of snowfall—and so in the US are generally found in Alaska and in montane forested areas along the Canadian border; although, they can also be found in high elevations further south in the contiguous US. They have giant paws that help distribute their weight over the surface of the snowy areas in which they live—which allows them to more effectively pursue their prey.
Lynx populations—like many other predators—fluctuate in response to their food supply. Lynx primarily eat snowshoe hare (Lepus americanus), so when populations of snowshoe hare decrease, so do populations of lynx. Lynx typically have litters of up to five kittens, but particularly food-rich years and a fertile mother can lead to litters of up to seven. In years of scarcity, these litters are smaller, which helps keep populations in check (there’s no evidence of significantly higher adult mortality when prey populations are smaller).
Lynx populations are dependent on areas with stands of conifer (also a preferred habitat of snowshoe hares)—which are areas that can be disturbed by forest fire or landslides, but also human-caused disturbances such as mining, logging, and infrastructure or housing development, all of which can cause habitat fragmentation and loss. Additionally, with lynx, there’s evidence that competition from other predators can also impact lynx populations—and that this competition can be increased as other resources, including habitat, become scarcer.
This has implications for how we think about restoration—and how we think about development projects. Do we include wildlife corridors as a part of our planning process (even while development or logging or mining is happening)? Do we try to replicate natural patchiness upon restoration, and provide phased restoration work that will provide a mix of older and younger conifer forest? How do we best pay attention to all the factors that make up critical habitat for species of concern?
These questions are important for considering how this species can be de-listed (it was listed by US Fish and Wildlife Service as threatened in 2000). For this to happen, its population will need to continue to increase, which means we must work to negate habitat loss and fragmentation.
And we should do this because lynx provide economic benefits by controlling snowshoe hares and its other prey animals, which are considered agricultural and silvicultural pests, because these animals have evolved to be part of our boreal forest ecosystems, and because most of us want more cat videos on the internet.
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October 25, 2017
Great Ecology is pleased to announce that Damian Holynskyj, AICP, LEED GA, CPHC will be joining our New York office as Eastern Regional Director. Damian has more than 13 years of experience in environmental, ecological, and sustainable land use planning. He has focused his career on mitigation banking, master plan development, green infrastructure planning, and ecosystem restoration. He’s a Certified Planner, Certified Passive House Consultant, and LEED Green Associate. He holds a BS in Environmental Biology from Rutgers and a Master of City and Regional Planning from the University of Pennsylvania.Leave a comment
October 18, 2017
Great Ecology is pleased to announce that Laurel Glass Lees has joined our San Diego office as Western Regional Director. Laurel comes to Great Ecology from the County of San Diego, where she was a Land Use/Environmental Planning Manager. Laurel has provided environmental planning services throughout her career; her professional certifications include Urban Planning & Development and Grant Writing. She serves on the board of the San Diego Association of Environmental Professionals San Diego Chapter as Vice President of Membership and is a member of the American Planning Association.Leave a comment
October 12, 2017
By Kay Wiseman
When was the last time you observed a healthy fox in Colorado?
I moved from the mid-west to Fort Collins, CO in 2011. I work and play in the outdoors so I tend to take notice when nature seems a bit “off.” No sooner had I settled into my new city that I began seeing foxes (Vulpes vulpes) scamper about neighborhoods and green spaces. But something about them just wasn’t right.
They were out in the open in the middle of the day.
They didn’t shy away at the first sign of people.
They looked absolutely dreadful; scrawny, dirty, scabby, tailless.
They were not the foxes I remember from back east. What I soon learned from my colleagues was that I had apparently moved to the Front Range during a major sarcoptic mange outbreak.
Natural systems have a process of checks and balances for populations. Populations generally fluctuate in regular cycles over periods of time. In some instances, a species population can seemingly grow exponentially until it reaches a certain carrying capacity1 and then rapidly decline. If you paid attention in middle or high school science, you’ll remember this as a “J-curve” pattern.
While there are many causal factors that must be taken into account for these declines, one factor that contributes significantly is disease. A species approaching carrying capacity is competing with itself for resources. As resources become scarce, the health of individuals may decline, which increases their susceptibility to disease. For the Front Range foxes, disease came in the form of sarcoptic mange, and to a lesser extent, rabies and West Nile.
Sarcoptic mange is caused by burrowing mites in the Sarcoptidae family. The mites dig through the skin causing intense itching and inflammation. Foxes that have contracted these mites scratch and bite furiously causing skin damage and opening themselves up—very literally—to severe infection. Mange is highly contagious in mammals and can even be transmitted to humans through direct contact. In humans, sarcoptic mite infection is referred to as scabies…gross. Luckily, for humans and our domestic animal friends, there is treatment. Unfortunately for wildlife, nature must take its course.
As much as we complain about the sly fox breaking into our hen houses, these adorable little predators have an important role to play and sadly we never seem to appreciate that role until they’re gone. During the outbreak, the Front Range reported increased rodent populations such as rats (Rattus spp.) and rabbits (Sylvialgus spp.; Lepus spp.), as well as outbreaks of disease carried by rodents. Health departments across the state were reporting human cases of tularemia (rabbit fever), hantavirus, and plague. Without predators, like the fox, the rodent population was not controlled and their numbers skyrocketed exposing people to an elevated risk of disease transmission.
After this 2 to 3 year mange outbreak ended, I no longer observed foxes anywhere along the Front Range. In fact, it was the summer of 2016 before I saw my first healthy fox in Colorado. The fox was beautiful with a sleek red coat and fluffy white tipped tail. Over the next year, I observed multiple frolicking foxes and my face lit up with excitement each and every time. The once devastated fox population is rebounding! Watch your hens everyone!
Photo: Red fox observed in Fourmile Canyon, Boulder County. Photo courtesy of Michael Duran
1 The carrying capacity of a population represents the absolute maximum number of individuals in the population, based on the amount of the limiting resource available. An Introduction to Population Ecology – The Logistic Growth Equation. Brandon M. Hale and Maeve L. McCarthyLeave a comment
September 28, 2017
By Liz Clift
Sea Otter Awareness Week is September 24-30, 2017
This summer, I had the opportunity to watch an otter hunt in the surf off the coast of Olympic National Park, in Washington state. The otter rode the waves in, close to the shoreline, and then swam back out, repeating this routine a couple of times before settling on a rock to watch us humans.
Sea otters (Enhydra lutris) are the heaviest members of the weasel family (male otters weigh up to 100 pounds), and unlike other marine mammals, lack a layer of blubber to help keep them warm. Instead, they have the densest fur in the animal kingdom (as many as a million hairs per square inch). This means that though they may look wet, the water isn’t actually penetrating all the way to their skin.
In fact, sea otter pups have such dense fur, they can’t dive under water until they get their adult fur. This is likely a survival adaptation: this dense fur will help keep them warm and also allows the mother to safely leave their pups floating on the surface of the water while they hunt for food.
Like other members of the weasel family, sea otters are carnivores. They eat urchins, shellfish (including mussels and clams), a variety of snails, squid, and a few dozen other marine species. Sea otters may store food they’ve gathered—or a favorite rock—in the large sections of extra skin near their armpits. This extra skin acts as a pocket (and who doesn’t want more pockets??).
A male might eat approximately 20 to 25 pounds of food a day! Much of this eating occurs on the surface of the water, and an observer might see an otter floating on its back and smashing a shellfish against a rock the otter has balanced on its chest in order to get at the meat.
Of course, if you’re lucky enough to see sea otters regularly, you’ll notice that they float on their back for more than just eating. They’ll also casually float in groups, called rafts (and these rafts may include hundreds of individuals!) to rest. When they’re resting, they often wrap themselves in kelp to keep themselves tethered to a single area, and mothers will also do this to their pups.
Otters play a valuable role in kelp forest ecosystems by helping control the sea creatures (including sea urchins) that would otherwise eat (and devastate) these kelp forests. Unfortunately, due to fur trading, their historic numbers have plummeted, which means these ecosystems have changed. To give you an idea of the scale of devastation around the sea otter fur trade here are some numbers:
Although they have made a fairly remarkable recovery, sea otters aren’t in the clear yet. They remain on the IUCN Red List (endangered) and now face threats of infectious disease. As recently as 2015, hundreds of sea otters showed up sick or dead along Alaska’s southern coast as the result of toxins from harmful algal blooms and bacteria. There’s also the possibility that orcas (aka, killer whales, Orcinus orca) have started to eat otters as their other food resources have disappeared, although even if this is true, it does not account for the large otter die-offs.
As sea otter populations to continue to fluctuate, we should consider how this impacts our coastal ecosystems in the areas where they live—and how this, in turn, impacts our local economies since the kelp forests that rely, at least partially, on otters (at least on the west coast) also provide shoreline protection against waves, and foster greater biodiversity of fish, crustaceans, bivalves, and other animals.Leave a comment
September 26, 2017
By Liz Clift (with thanks to Joseph Ehrenberger!)
If you grew up in one part of the US (many of the eastern states extending into the Great Plains), the calling of the American bullfrog (Lithobates catesbeianus) was probably a staple of your childhood evenings. If you grew up in other places, perhaps not so much.
However, this might be changing. The American bullfrog can show up as an aggressive—and invasive—species in parts of the US where it isn’t native, and is able to outcompete native frog species. It doesn’t just impact frogs though. The American bullfrog will eat anything it thinks it can get in its mouth, including small rodents, birds, and other frogs—which means it can have a detrimental impact on some threatened and endangered species or state-listed species of concern.
Of course, in the eastern US, bullfrogs will still prey upon native frogs and anything else they can fit in their mouth. But, there is a greater amount of water and more diverse aquatic habitats. This means that bullfrogs and other frog species are better able to co-exist. In general, bullfrogs are especially fond of slow-moving open bodies of water, while other frogs can happily exist where there are more aquatic plants or within damp forests.
In the western US, where for the most part, water is scarcer and where modifications (like dams) have altered natural watercourses, bullfrogs have a prime opportunity to outcompete other frogs. And, like other invasive species, once bullfrogs have invaded a place, they can be difficult to remove. This is due in part to the large number of eggs that they lay (females may lay a clutch of 20,000 eggs!) and the fact that removing adults can actually improve the survival of tadpoles, since the adult bullfrogs are cannibalistic.
In addition, they have lived for decades in many of the places where they are invasive, which means well-established populations must be dealt with (this is all the more reason to take steps to remove bullfrogs as soon as you notice them, if you live a place where they are not native). Bullfrogs can also travel nearly a mile in search of a new place to colonize, if something happens to their initial home—which could include draining a pond or other water resource, which is one of the methods of dealing with a bullfrog invasion.
Traditionally, practices for managing bullfrogs have included hunting/eating them, temporarily—and repeatedly—draining the ponds or other areas they have taken up residence, and potentially introducing (if necessary) predatory insects or other animals like largemouth bass into ponds where tadpoles are found. (Unfortunately, bullfrogs and their tadpoles don’t taste that great to many fish—so the fish may suck in a tadpole only to spit it back out.)
However, these practices can only do so much on their own. Additional, and more creative, management options should be considered. If bullfrog populations are managed, then native frogs tend to move back in fairly readily (or will re-establish once re-introduced). This is promising in terms of increasing biodiversity in areas impacted by bullfrogs.
Great Ecology is working with Adaptation Environmental Services to develop and implement some innovative approaches to bullfrog management in Colorado—and citizen-science may be one of the ways to monitor populations of bullfrogs compared to native frogs, such as the northern leopard frog (a species of special concern in Colorado) before and after such measures are taken. Citizen-science can also help detect a problem early on, if frog monitoring is incorporated into a management plan.
Not sure you can tell the difference between a bullfrog and other frogs? One way is to listen to their calls. Here is your moment of bullfrog-sound zen (so that you’ll know when you’re listening to a bullfrog and when you’re listening to some other frog, say a northern leopard frog).
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September 7, 2017
By Liz Clift
Visual note-taking, sometimes also called sketchnoting or graphic recording, allows you to represent ideas non-linguistically. And considering that the written word is a relatively modern invention (in particular, it wasn’t until very recently in the history of human beings that the written word was something most of us in the Western world, at least, have access to), it shouldn’t come as a surprise that an estimated two-thirds of people are visual learners.
As a perpetual doodler, who has always been drawn to less traditional forms of note-taking, learning about visual note-taking was eye-opening for me.
At last, I had a name for the thing I used to do—and the thing that “being a professional” had nearly stolen from me.
“Content-driven doodling” on the other hand, has the potential to spark creativity and improve comprehension, and to help people (like me) who learn better visually and kinesthetically, rather than aurally, retain information in a meeting or presentation—or a site visit or reading.
Visual note-taking can be as linear or as creative as you need (or as the presentation dictates), but visual note-taking usually utilizes some combination of the following:
What, you might be wondering, does this have to do with ecology or restoration or actual design of places?
I may be biased (I am a writer), but so much of the work we do as environmental professionals is about telling a story—and then helping it come to fruition, perhaps as a restoration project, a management or strategic plan, or an educational tool (like interpretive signage). For instance, depending on the project, you might be helping to tell:
Visual notes might spark exactly what you need to help you write a memo, report, interpretative signage, or your next presentation. Why? Because you’re already thinking outside the box. Something might be the beginning of a conceptual design or a presentation to the community or a sketch that eventually gets transformed into a publicly consumable good on a brochure.
Or, less immediately relevant but just as important, visual notes really can help you remember what you and others at a meeting or training discussed. Doodling does help people retain information (29% more than non-doodling counterparts) and improves overall problem-solving.
Plus, in many ways, visual note-taking is an extension of the type of field notes that our predecessors have used extensively—ranging from more detailed botanical drawings to a quick sketch of what the site looks like—and that we may even use ourselves.
Will you get it right the first time? Probably not. I’m certainly still practicing. But “not being able to draw” isn’t an excuse (google: “Star People: How to Storyboard”). Is it for you? Maybe. Maybe not. You’ll have to try it to figure that out.
But if it means that you retain more information, it’s more visually appealing, and it might help you make more creative connections that could improve your problem-solving ability, maybe it’s worth a shot.Leave a comment
August 30, 2017
by Liz Clift
Have you seen the photos—and worse, the video!—of the giant mats of floating fire ants (Solenopsis invicta) in the wake of the flooding in southeast Texas? Yeah, us too, and we’ll admit they’re a bit horrifying.
And look, guys. The ants are now just feet from house. pic.twitter.com/rt2aU7Uvm3
— Mike Hixenbaugh (@Mike_Hixenbaugh) August 28, 2017
But, they’re also fascinating.
Fire ants are invasive to the US and they love floods. Or, at least, they evolved to survive floods on river banks in South America, which means they happily use flood waters to relocate, which perfectly explains why my grandparents who lived in southeast Texas never actually removed them from their yards by spraying them with the water hose. When the waters rise, fire ants form “rafts” of thousands or millions of fire ants using their mandibles and their sticky feet and can do this in under two minutes. From there, they switch out the submerged ants with those that are drier, which helps keep the colony afloat.
In this configuration, they’re able to drift around on the flood waters until they reach a tree, land, or other suitable dry area (aka, literally anything solid) that they can scramble up.
Sure, you might be thinking, but they can probably be disturbed the swirling a stick through them, right?
If their configuration is disturbed, they will reconfigure to fill the hole (and I don’t know about you, but I wouldn’t want any of those little biters to come at me via a stick I was just using to torment them, especially because during flood times they are apparently more aggressive and more venomous. (More on that fun fact in a bit).
So what works?
Apparently dish soap, which will cause the configurations to break up and the ants to drown because they aren’t able to trap air near their bodies.
These fire ant rafts, fortunately, can’t last forever.
Post-Katrina, fire ant populations in New Orleans and other impacted areas decreased because it took weeks to pump all of the flood waters out. Those populations have never rebounded.
Which, many SE Texans might see as a good thing, especially if they’ve stepped in a fire ant pile before. Unlike regular ants, which will bite and then spray an acid (isn’t nature fun?) fire ants like to bite, hold on, and inject a poison into you that has 46 different proteins. Some people (somewhere slightly above 1:100 people) are pretty susceptible to this and can experience an allergic reaction or hallucinations. The rest of us just get welts (after Katrina, people were apparently entering field hospitals with welts upon welts from fire ants, after wading through the waters). But remember how I mentioned that right now they are more venomous? It averages 87% more venom per bite per ant. Yeah, that’s just making everything about this more of a nightmare.
How the floods from Harvey will affect fire ant populations in SE Texas remains to be seen, and will be largely determined by how long it takes the flood waters to recede (or, you know, a bunch of folks going out with bottles of Dawn to combat the terror mats the ants have formed).
A reduced population could be a good thing for more than just humans though. Ground nesting birds (like quail and meadowlarks) as well as some reptiles are also impacted by fire ants (whatever you’re imagining, that’s probably right) as well as native ant species, which are usually out-competed in areas cohabited with fire ants.
Who else wouldn’t be sad to see fewer fire ants? Ticks. Fire ants love to eat ticks.
So, if you’re searching for a bright side, wherever these fire ants wind up will likely be very free of ticks for the foreseeable future.Leave a comment
August 30, 2017
Great Ecology is pleased to announce that President & Founder of Great Ecology, Mark S. Laska, Ph.D., will be one of the panelists at Mega-Superfund Site Symposium on September 7, 2017, held in Philadelphia, PA. This symposium is co-sponsored by AIRROC and the Environmental and Emerging Claim Manager Association (EECMA).
The symposium will address challenges that arise with mega superfund sites, such as Portland Harbor, the Lower Passaic River, and similar contaminated sediment sites that have remediation costs in the US$ billions. Dr. Laska will be part of the panel called Liability Defenses and Natural Resource Damages, alongside Loren Dunn and Ira Gottlieb.Leave a comment