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Blog: Wildlife Transition Corridors

Discusses the role of transition corridors in preservation of small populations such as local mountain lions.

The Lion's Eye

The Santa Monica Mountains National Recreation Area is a mountain lion habitat. Each lion requires about 100 square miles of living space to provide enough food and roaming room to stay alive. If a lion kills off a deer, then the deer population has to be large enough provide another one a week later, or the lion’s staple food supply will run out. There are about seven lions living in our mountains, give or take one or two. They are extremely competitive and will kill off each other over food and territory. P-1 killed his own mate as well as P-7, his daughter. Males are not into family life and females have a time limit after which they drive off their young, like P-18. Lions need large, open spaces to exist.

The lions are Nature’s indicator of the health of the ecology of the SMMNRA. As top predators, they limit the mule deer population, while the mule deer provide the lions staple food. As long as both play their role, the system works. In places like Michigan and Pennsylvania, the deer populations there are so out of hand that every driver has to pay hundreds of dollars each year for supplemental deer insurance. The predator/prey relationship has become untenable. Thousands and thousands of licensed deer hunters each year cannot keep up with this warping of nature’s balance.

The SMMNRA is like an island for the lions, with Mother Pacific on one side, the 405 and the 101 freeways on two others and the heavily farmed Oxnard plains on the last.  The NPS calls this isolation a ‘fragmentation of habitat’. Only one lion (P-12) has ever come to the island from somewhere else, when he crossed the 101 at Liberty Canyon. Lions wander along game trails at the edge of the freeways, hoping to find a way across. They turn around and go back when they cannot. 8 high speed lanes and 50 foot vertical walls on the 405 are hard to navigate. P-18 tried it at the Getty Center and was taken out by an early morning commuter. While migrating birds can move from summer to winter habitats by air, lion’s movements are limited by the confusion of the city and the vertical barriers and threats provided by mankind.

The lions in the Santa Monicas are all related to one another. Incest is the norm, with fathers (P-12 and P-1) mating with daughters (P-19 and P-11). As a result of inbreeding, the potential for mutations is high. A mutated lion, like a two-headed snake, could not compete, and would most probably die off as soon as it started to move away from its mother. Relatively small infirmities such as those caused by rat poison early in life, have resulted in death for lion cubs, such as P-17.

There is a need, a critical need, then, for new genetic material to be introduced from non-related lions traveling via wildlife corridors. Because P-12 was unrelated to the lions of the Santa Monica Mountains, his mating with P-13, a resident, after arriving in the SMMNRA, provided hope for the future of the population. His mating with his daughter (P-19) was disappointing. Unlike the Ranger /Scientists observing, P-12 does not seem to care much about genetic  potential or the future of his kind.

Many people believe that capturing and removing the lions would cure this problem, as well as others. The problem with relocation is that any place you put them is already the habitat of a group of resident lions.  If it’s a good place for lions, then there will be lions there. Think of an inner city gang expanding into another gang’s territory. The newly introduced lions don’t know the territory. The resident lions know it well and are patrolling it every day. Somebody is going to lose. Also, if the SMMNRA was empty, new lions would most probably re-populate it someday. P-22 did make it to Griffith Park.

There are other lion habitats in Southern California, not too far away. The Simi Hills is such a habitat, as is the San Gabriel Mountain Range and the Los Padres National Forest. Here in Southern California, land where people can live is at a premium and corridors connecting lion habitats are no exceptions.  Pressure from highly profitable real estate interests to build is high. The choice between a lion and someone with a few million dollars in their hand is made easily by someone standing to profit from a 10 percent commission.

It is only through the dedicated activism of conservation organizations that wildlife corridors like the Liberty Canyon Wildlife Corridor near Cheeseboro National Park,  can continue to provide a pathway to the survival of our Mountain Lion population. Support for organizations such as Save Open Space, the Santa Monica Mountains Conservancy, The Mountain Lion Foundation, the Nature Conservancy and the Mountains Restoration Trust, is always appreciated. Without the efforts of these organizations, the Santa Monica Mountains would be a completely different place.

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steve dunn May 19, 2013 at 04:43 pm
All I get on this blog is an ad for verizon
Andy Lyon May 19, 2013 at 03:48 pm
Andy Lyon May 19, 2013 at 03:47 pm
yeah sulah cat ...that's why the santa monica bay restoration foundation , the one's responsible forRead More this lagoon project , posted this photo and cation three days ago ??? https://www.facebook.com/photo.php?fbid=577617672278972&set=a.140206439353433.15428.130999036940840&type=1&theater&notif_t=like
Sulah cat May 19, 2013 at 01:17 pm
Mrs Hanscom, we can agree on one point----algae was/is present both before and after theRead More restoration. Perhaps you can explain that to Andy. Your 12-30 million dollar assertion regarding the cost of the restoration is absurd & seems to get larger with every telling of that lie. The hypocrisy is on your part when you suggest that the proponents made remarks regarding algae that YOU say they did----no responsible biologist would have made such remarks. Your breaching comments are rank speculation. Why would "Ford" breach the lagoon at this point in time? You lie, distort and foment discord at every opportunity.Puuuuuuuuuu.
Jessica E. Davis (Editor) May 17, 2013 at 03:51 pm
Love that you are using the message board to ask this question. Does any one have any ideas?
M Stanley May 16, 2013 at 01:33 pm
Thank you for the information Jessica!
Jessica E. Davis (Editor) May 15, 2013 at 05:54 pm
Also, first make sure you are signed in, and if you can't go to the reset password link here:Read More http://malibu.patch.com/forgot_password.
Max May 15, 2013 at 11:03 am
Dear Phil (re: Burt's column), I can’t quite put my finger on it, but, I sense anRead More Eggs-itential undertone to all this. Does the chicken Egg-ist on behalf of the egg or vice versa? Eggs-perience will reveal the truth. To be complete, I must rehash Camus’ “The Play-egg.” Yet, as I recall, in the Book of Eggs-odous, there wasn’t a single Play-egg, but ten of them… so many, in fact, that it seems to many readers to be literally a Dozen Play-eggs. But, then again, I’m not very religious. In fact, many of my colleagues take me for an Egg-nostic. But, they are such Hard-boiled fanatics, that, in fact, their peers surmise they boarder on Egg-lectic. But, as Burt always says in da ‘hood, “Om-letting them be what they want to be.” We, however, have one on Burt: Rumor has it that he fell of the Vegan and had an egg salad… to which he Eggs-claims, “It was a serving of ‘Egg Beaters,’ you Egg-Heads!!”
Jessica E. Davis (Editor) May 14, 2013 at 10:27 pm
From my family: McCluckens
Susan Tellem May 14, 2013 at 07:35 pm
Call them Nuggets, Fricassee, Kiev, Marsala and Enchilada because that's what chickens end up as onRead More the dinner plate. Just sayin'.
TheDr. May 2, 2013 at 11:26 pm
But autumn in old town around Farmington Rd and Grand River is nice as is the season anywhere inRead More Michigan..I love California and the years I lived there.
J. Flo April 27, 2013 at 02:21 am
May Malibu residents, businesses and our City ALWAYS have the foresight and passion to remember andRead More protect > "Malibu was a place I went to with friends to hang out at the beach. But the last few years, its become a place I often go to by myself as a little escape zone. Whenever I have need to clear by head and level my shoulders, I head out to Malibu for a little mini-vacation. Whenever, like Ishmael, it feels like a damp, drizzly November in my soul, I fire up my 1965 Chevelle Malibu Super Sport and go see the watery part of the world." Amen.
Darcy Miller April 27, 2013 at 12:43 am
I'm from Farmington, MI and I live in Calabasas now, off Mulholland Highway, for the same reason.Read More Beauty all around...
Sulah cat May 16, 2013 at 03:18 pm
MT-------still engaging in blatant hyperbole. Aldo Leopold van de Hoeck is not! Jacques, thanksRead More for the offer but no thanks. You'll just have to do it yourself. It's difficult to respond to a remark that has no sense. Puuuuuuuuuuur
Jacques Mehoff May 3, 2013 at 07:30 pm
I don't know why Sulah Cat would talk about CeCe in such a way, I thought they were friends......
Jessica E. Davis (Editor) May 3, 2013 at 07:24 pm
Thanks all for the love. I think I learned my lesson about taking time off though! It's been a busyRead More week back.
J. Flo April 10, 2013 at 12:51 am
We also use Havahart traps. They are gentle and humane, we can easily transport the little crittersRead More away from our population. We've done this successfully at least 20 times! Shared them with countless Malibu friends who've also successfully and humanely cured their rodent issues.
Maureen Haldeman April 9, 2013 at 02:29 pm
Many complain but do nothing more ... and it is only by action that something gets accomplished. IRead More applaud The Malibu Agricultural Society for persevering on this critical issue and thank the local businesses that removed the rat poison from their shelves. We really can all make a difference. Thank you!
Cece Stein April 9, 2013 at 01:56 pm
Dittos Kian Well said and thanks for your compassion .
J. Flo April 30, 2013 at 02:44 pm
"Although a great many women had entered the men’s room, not a single one emerged."Read More I just choked on my coffee. This might be the funniest thing I've ever read . . .