1 00:00:39,619 --> 00:00:37,340 the mohave desert one of the hottest 2 00:00:43,759 --> 00:00:39,629 driest and most barren deserts of North 3 00:00:45,979 --> 00:00:43,769 America Webster's dictionary wants to 4 00:00:50,359 --> 00:00:45,989 find desert as a desolate and forbidding 5 00:00:52,340 --> 00:00:50,369 prospect but on the contrary the Mojave 6 00:00:54,529 --> 00:00:52,350 Desert is a fragile place where a 7 00:01:01,039 --> 00:00:54,539 variety of plants and animals unique to 8 00:01:02,630 --> 00:01:01,049 this territory are commonly found the 9 00:01:04,999 --> 00:01:02,640 state of the desert tortoise however 10 00:01:07,340 --> 00:01:05,009 perhaps best of all represents the 11 00:01:14,910 --> 00:01:07,350 delicate balance of desert life and its 12 00:01:19,469 --> 00:01:17,039 the desert tortoise can be found in the 13 00:01:21,840 --> 00:01:19,479 western portion of Arizona southeastern 14 00:01:28,289 --> 00:01:21,850 California and a small area of southern 15 00:01:31,080 --> 00:01:28,299 nevada utah and mexico the tortoise 16 00:01:33,840 --> 00:01:31,090 family has been in existence for 175 17 00:01:36,060 --> 00:01:33,850 million years but a mere century or so 18 00:01:39,690 --> 00:01:36,070 of living with humans may be proving too 19 00:01:41,789 --> 00:01:39,700 much for them tortoises living in the 20 00:01:43,859 --> 00:01:41,799 mojave desert are generally found below 21 00:01:49,620 --> 00:01:43,869 the 4,000 foot level in joshua tree 22 00:01:55,320 --> 00:01:49,630 communities creosote bush and saltbush 23 00:01:56,880 --> 00:01:55,330 scrub habitats the burrows in which they 24 00:01:58,289 --> 00:01:56,890 live protect them from the extreme 25 00:02:00,779 --> 00:01:58,299 temperatures found in the desert 26 00:02:02,490 --> 00:02:00,789 environment the Halfmoon like appearance 27 00:02:04,800 --> 00:02:02,500 corresponds to the shape of their 28 00:02:11,670 --> 00:02:04,810 shelves and can be anywhere from six 29 00:02:15,449 --> 00:02:13,830 with the rebirth of spring Lee emerge 30 00:02:18,030 --> 00:02:15,459 from their burrows when a climate brings 31 00:02:24,750 --> 00:02:18,040 warmth and a feast of new annual plants 32 00:02:30,720 --> 00:02:27,539 in the wild desert tortoises can survive 33 00:02:33,390 --> 00:02:30,730 70 years or more and grow to over one 34 00:02:36,149 --> 00:02:33,400 foot in diameter reproduction of the 35 00:02:39,210 --> 00:02:36,159 tortoises doesn't begin until 15 to 20 36 00:02:42,110 --> 00:02:39,220 years of age the female lays between 1 37 00:02:44,490 --> 00:02:42,120 and 15 eggs and then abandons the nest 38 00:02:47,160 --> 00:02:44,500 these small hatchlings are born 39 00:02:48,930 --> 00:02:47,170 approximately 90 days later with very 40 00:02:51,119 --> 00:02:48,940 soft shells that will not become 41 00:02:53,580 --> 00:02:51,129 completely hardened for about five or 42 00:02:55,830 --> 00:02:53,590 six years and it is during this 43 00:02:58,830 --> 00:02:55,840 relatively defenseless stage that they 44 00:03:01,470 --> 00:02:58,840 fall prey to many animals consequently 45 00:03:03,479 --> 00:03:01,480 there's slow reproductive cycle delicate 46 00:03:06,089 --> 00:03:03,489 early years and destruction of their 47 00:03:16,349 --> 00:03:06,099 habitat make it difficult to save this 48 00:03:18,509 --> 00:03:16,359 frail species in 1990 the US Fish and 49 00:03:20,520 --> 00:03:18,519 Wildlife Service listed the desert 50 00:03:23,369 --> 00:03:20,530 tortoise has threatened under the 51 00:03:25,559 --> 00:03:23,379 Endangered Species Act this listing was 52 00:03:28,680 --> 00:03:25,569 prompted by severe population declines 53 00:03:31,409 --> 00:03:28,690 caused by the loss of habitat from 54 00:03:33,420 --> 00:03:31,419 off-road vehicles agriculture grazing 55 00:03:36,300 --> 00:03:33,430 animals and urbanization destroying 56 00:03:38,009 --> 00:03:36,310 their burrows and food supply people 57 00:03:40,470 --> 00:03:38,019 collecting these interesting creatures 58 00:03:44,550 --> 00:03:40,480 as pets exposing them to numerous 59 00:03:46,349 --> 00:03:44,560 diseases and predation by Ravens coyotes 60 00:03:56,500 --> 00:03:46,359 and Badgers are leading to their 61 00:03:56,510 --> 00:04:03,589 you 62 00:04:08,250 --> 00:04:06,539 since the early 19th century urban 63 00:04:11,100 --> 00:04:08,260 development has been deteriorating the 64 00:04:13,050 --> 00:04:11,110 desert tortoise habitat urbanization is 65 00:04:51,880 --> 00:04:13,060 expanding into regions of desert that 66 00:04:56,540 --> 00:04:54,350 since tortoises don't venture far from 67 00:04:59,030 --> 00:04:56,550 their original territory they are not 68 00:05:01,940 --> 00:04:59,040 likely to survive if relocated to areas 69 00:05:04,370 --> 00:05:01,950 adjacent to develop regions once their 70 00:05:07,520 --> 00:05:04,380 home is destroyed they too could perish 71 00:05:09,770 --> 00:05:07,530 and while progress is an undeniable part 72 00:05:11,930 --> 00:05:09,780 of our existence we still need to be 73 00:05:17,480 --> 00:05:11,940 aware of our desert ecosystem and the 74 00:05:19,280 --> 00:05:17,490 impact we are creating construction 75 00:05:21,310 --> 00:05:19,290 crews are being urged to watch out for 76 00:05:24,280 --> 00:05:21,320 the desert tortoise and other wildlife 77 00:05:26,510 --> 00:05:24,290 before any construction project begins a 78 00:05:28,430 --> 00:05:26,520 biological assessment is made in which 79 00:05:33,470 --> 00:05:28,440 areas to avoid are highlighted with 80 00:05:35,300 --> 00:05:33,480 ribbons and sometimes fencing crews are 81 00:05:37,640 --> 00:05:35,310 asked to limit the amount of disturbance 82 00:05:39,950 --> 00:05:37,650 within their project area check in 83 00:05:42,320 --> 00:05:39,960 trenches and holes for any animals that 84 00:05:44,030 --> 00:05:42,330 might have fallen in look under their 85 00:05:46,610 --> 00:05:44,040 vehicles for tortoises that like to 86 00:05:50,630 --> 00:05:46,620 escape from the Sun and discard all 87 00:05:52,160 --> 00:05:50,640 trash to keep predators away if a 88 00:05:54,920 --> 00:05:52,170 tortoise is spotted the project 89 00:05:57,500 --> 00:05:54,930 supervisor and a wildlife biologist must 90 00:05:59,990 --> 00:05:57,510 be notified immediately if a tortoise is 91 00:06:02,660 --> 00:06:00,000 killed accidentally or otherwise the 92 00:06:04,850 --> 00:06:02,670 project could be delayed following these 93 00:06:07,280 --> 00:06:04,860 simple guidelines could aid in saving a 94 00:06:11,650 --> 00:06:07,290 multi-million dollar project and an 95 00:06:17,870 --> 00:06:14,150 agriculture has also stripped away vast 96 00:06:19,250 --> 00:06:17,880 areas of desert environment and grazing 97 00:06:21,770 --> 00:06:19,260 livestock are competing with the 98 00:06:25,940 --> 00:06:21,780 tortoises food supply by feasting on the 99 00:06:31,770 --> 00:06:29,460 the Raven a species common to the Mojave 100 00:06:34,740 --> 00:06:31,780 Desert has become a major predator of 101 00:06:36,900 --> 00:06:34,750 the tortoise over the past 40 years the 102 00:06:39,270 --> 00:06:36,910 raven population has grown in response 103 00:06:44,520 --> 00:06:39,280 to urbanization and increased feeding 104 00:06:49,530 --> 00:06:44,530 opportunities at landfills many perceive 105 00:06:51,690 --> 00:06:49,540 the desert to be indestructible however 106 00:07:04,610 --> 00:06:51,700 the increasing popularity for desert 107 00:09:34,750 --> 00:09:27,430 you 108 00:09:37,510 --> 00:09:34,760 opportunity to watch a really unique 109 00:09:40,600 --> 00:09:37,520 animal in its natural environment watch 110 00:09:43,450 --> 00:09:40,610 what it does is it feeds is it is it 111 00:09:46,240 --> 00:09:43,460 seek shelter maybe even makes a nest or 112 00:09:47,890 --> 00:09:46,250 mates we would advise you to stay back 113 00:09:50,440 --> 00:09:47,900 and not interfere with the tortoises 114 00:09:53,250 --> 00:09:50,450 life pattern certainly we urge you not 115 00:09:56,170 --> 00:09:53,260 to pick it up or harass it in any way 116 00:09:58,240 --> 00:09:56,180 these animals are very delicate and and 117 00:09:59,980 --> 00:09:58,250 even though they're Hardy in the sense 118 00:10:05,830 --> 00:09:59,990 of being able to live in the desert they 119 00:10:07,570 --> 00:10:05,840 they don't do well when handle if you do 120 00:10:09,610 --> 00:10:07,580 happen to come across a tortoise that 121 00:10:15,270 --> 00:10:09,620 appears to be an immediate danger like 122 00:10:15,280 --> 00:10:20,880 note the direction in which it is moving 123 00:10:26,050 --> 00:10:23,650 gently pick it up placing your hand 124 00:10:31,230 --> 00:10:26,060 under the belly for support and be 125 00:10:37,090 --> 00:10:34,600 then approximately 100 feet off the road 126 00:10:45,570 --> 00:10:37,100 in a shaded area place the tortoise in 127 00:10:49,900 --> 00:10:47,740 protecting the desert tortoise and all 128 00:10:52,290 --> 00:10:49,910 life in the ecosystem from extinction is 129 00:10:54,580 --> 00:10:52,300 a responsibility we all must share 130 00:10:56,800 --> 00:10:54,590 developing an awareness of the various 131 00:10:58,510 --> 00:10:56,810 forms of life and existence is perhaps 132 00:11:01,480 --> 00:10:58,520 the first step in this conservation 133 00:11:06,590 --> 00:11:03,650 biological research has indicated that 134 00:11:09,170 --> 00:11:06,600 ecosystems can maintain themselves if we 135 00:11:10,970 --> 00:11:09,180 preserve them as complex systems this 136 00:11:12,800 --> 00:11:10,980 means all the parts of the system 137 00:11:15,620 --> 00:11:12,810 whether plant or animal are 138 00:11:46,949 --> 00:11:15,630 interconnected and must be preserved in 139 00:11:54,129 --> 00:11:50,590 the desert tortoise is only one animal 140 00:11:57,670 --> 00:11:54,139 in the desert however it's burrows 141 00:11:59,710 --> 00:11:57,680 provide habitat for other species it's 142 00:12:01,900 --> 00:11:59,720 been here a lot longer than the human 143 00:12:04,960 --> 00:12:01,910 race has probably dating back to the age 144 00:12:07,689 --> 00:12:04,970 of the dinosaurs it's an indicator that 145 00:12:09,639 --> 00:12:07,699 the health of the system is suffering 146 00:12:14,949 --> 00:12:09,649 when we see declines in an animal like 147 00:12:17,619 --> 00:12:14,959 this as we gain more insight into this 148 00:12:19,600 --> 00:12:17,629 diverse biological world we live in we 149 00:12:27,069 --> 00:12:19,610 also have the responsibility to preserve 150 00:12:30,179 --> 00:12:27,079 it progress and technology have advanced 151 00:12:33,040 --> 00:12:30,189 the human race to limitless capabilities 152 00:12:35,220 --> 00:12:33,050 but imagine if we started taking parts 153 00:12:37,989 --> 00:12:35,230 out of today's highly complex aircraft 154 00:12:40,059 --> 00:12:37,999 take away one part too many and the 155 00:12:43,509 --> 00:12:40,069 aircraft is destroyed in the mission 156 00:12:45,340 --> 00:12:43,519 lost so too with our environment if one 157 00:12:47,199 --> 00:12:45,350 part is missing like the desert tortoise 158 00:12:51,040 --> 00:12:47,209 then our mission of maintaining a 159 00:12:53,230 --> 00:12:51,050 healthy environment may be lost it is 160 00:12:56,829 --> 00:12:53,240 not too late if we all do our part in 161 00:12:59,049 --> 00:12:56,839 maintaining this delicate balance as we 162 00:13:00,939 --> 00:12:59,059 continue to explore the unknown our